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fix(deps): update dependency undici to v7.30.1 [security] - #6695
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Edit accuracy: accurate 267 (base branch 267), smooth 124 of thoseThe gate passes. Quarantined, measured but not gated (8)
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…view to heygen-com#7265 Adopt heygen-com#7284 (Studio Storyboard tab and `doc: "storyboard"` Desktop handoff, adapted to the fork's desktopApp without heygen-com#6897) and heygen-com#7324 (drawElement gate: webgl_unavailable / beginframe_no_self_verify). PR axis heygen-com#7260-heygen-com#7265 carries earlier verdicts; re-pin heygen-com#6695 and heygen-com#6816, resolve heygen-com#7150 as superseded by heygen-com#5746. Watermarks: commit 18fc75d, PR heygen-com#7265, issue heygen-com#7223, monitored 99. Co-authored-by: WaterrrForever <[email protected]> Co-authored-by: Vance Ingalls <[email protected]> Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Verdict: APPROVE (first pass, maintainer approval still needed) · 0 blocker · 0 important · 1 nit
Both undici pins (packages/cli, packages/engine) move to 7.30.1 and bun.lock keeps a single [email protected] entry, which jsdom's ^7.25.0 also resolves to. 7.30.1 is the first patched 7.x release for the Oct 23/27 advisories. The only runtime caller is packages/engine/src/utils/urlDownloader.ts (Agent({ connect: { lookup } }) plus fetch), and that API is unchanged.
- nit: this head's CI ran on Nov 6 against a base 259 commits behind
main. The merge queue retests the merged result, but asking Renovate to rebase would refresh the PR checks first. The0.9.10 → 0.9.19workspace-version churn inbun.lockis harmless.mainstill records 0.9.10 there.
What I checked
- Merged this PR onto current
main(d208281): no conflicts.bun install --frozen-lockfilesucceeds and resolves[email protected]. NODE_ENV=test vitest run src/utils/urlDownloader*inpackages/engine: 94/94 pass on the merged tree. The full engine suite's only failures are ffmpeg and Chrome tests that need binaries this sandbox doesn't have.- No other undici pins. The Lambda runtime locks don't contain undici.
— Genesis (first-pass review requested via Clippy)
jrusso1020
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Post-merge advisory review (this PR is already merged into main). Findings would be follow-ups, not gating.
Reviewed at 3b2321c0bcca0edcc40fce84dbaa11af9d8bb6b1.
No blockers found. Independently verified Genesis's compatibility assessment: the only package import is the downloader's Agent/fetch transport; custom DNS lookup, manual redirects with per-hop validation, and abort-driven timeouts remain compatible with the upstream changes. No ProxyAgent call sites need migrating. The upstream Agent change preserves function-valued TLS options while retaining the existing connect-options forwarding (7.30.1 release notes).
Validation on the PR head (not a merged tree): frozen-lockfile install and full build pass; NODE_ENV=test vitest run src/utils/urlDownloader --maxWorkers=2: 94/94 pass, including real-transport private-DNS refusal tests. Parsed lockfile comparison finds undici as the only changed external package; the additional 14 workspace-version refreshes match their package manifests. The patch merges cleanly with current main. Hosted CI passed at this exact head on November 6; those results predate today's main.
Need: yes, security update · Size: ok · Reuse: existing downloader transport · Simpler: already minimal · Structure: fine (checked existing URL downloader; no split)
Risk: low — same-major dependency update with compatible call sites and passing targeted coverage.
Verdict: Ready
Reasoning: Both runtime pins and the resolved package move together, with no introduced correctness or compatibility issue found.
— Rames
Note
This PR body was truncated due to platform limits.
This PR contains the following updates:
7.25.0→7.30.1undici vulnerable to cross-user information disclosure via shared cache whitespace bypass
CVE-2026-9678 / GHSA-pr7r-676h-xcf6
More information
Details
Impact
Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream
Cache-Controlheader uses whitespace-padded qualifiedprivateorno-cachefield names such asprivate=" authorization"orno-cache="\tauthorization". The parser preserves the surrounding whitespace, so later comparisons against the literalauthorizationfield name fail and the response is stored.In shared-cache mode, this allows a response containing one user's authenticated data to be served from cache to a subsequent caller, including an unauthenticated caller, when both requests resolve to the same cache key.
Affected applications are those that explicitly enable the cache interceptor (
interceptors.cache()) in shared mode, forwardAuthorizationheaders upstream, and receive cacheable responses with non-canonical qualifiedprivateorno-cachedirectives.Patches
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds
If upgrade is not immediately possible, disable shared-cache mode for traffic that includes
Authorizationheaders, avoid caching responses to authenticated requests, or addVary: Authorizationupstream.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent
CVE-2026-9697 / GHSA-vmh5-mc38-953g
More information
Details
Impact
undici's
ProxyAgentsilently drops therequestTlsoption when configured with a SOCKS5 proxy URI (socks5://orsocks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configuredca,cert,key,rejectUnauthorized, andservernamesettings.Applications that pin to an internal or corporate CA via
requestTls.cawill, when their proxy URI is SOCKS5, get the default Mozilla CA bundle as the trust anchor instead. Any cert signed by any publicly-trusted CA for the target hostname is accepted, breaking the intended pin and enabling MITM read and tamper of the HTTPS exchange.Affected applications are those that use undici's
ProxyAgent(orSocks5ProxyAgentdirectly) with SOCKS5 AND rely onrequestTlsfor TLS scope restriction. The bug was introduced in undici 7.23.0 when SOCKS5 support was added.Patches
Upgrade to undici v7.28.0 or v8.5.0.
Workarounds
No workaround is available within the SOCKS5 path. If a SOCKS5 proxy with TLS scope restriction is required and an upgrade is not yet possible, route the traffic through an HTTP-proxy
ProxyAgentinstead, whererequestTlsis honored correctly.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to HTTP response queue poisoning via keep-alive socket reuse
CVE-2026-6733 / GHSA-35p6-xmwp-9g52
More information
Details
Impact
Undici's HTTP/1.1 client is vulnerable to response queue poisoning on reused keep-alive sockets. An attacker-controlled upstream server can inject an unsolicited HTTP/1.1 response onto an idle socket after a request completes. When the client dispatches the next request on that socket, it associates the injected response with the new request, causing responses to be delivered to the wrong requests.
This requires an attacker-controlled or compromised upstream HTTP/1.1 server and keep-alive connection reuse.
Patches
Upgrade to undici v6.27.0, v7.28.0 or v8.5.0.
Workarounds
Disable keep-alive connection reuse by setting
keepAliveTimeout: 0on the Client or Pool.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse
CVE-2026-6734 / GHSA-hm92-r4w5-c3mj
More information
Details
Impact
When using
Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless of the intended destination.This causes cross-origin request routing: credentials and request data intended for origin B are sent to origin A, responses from the wrong origin are trusted, and HTTPS requests may be silently downgraded to HTTP.
Impacted users are applications that use
Socks5ProxyAgent(directly or viasetGlobalDispatcher) and make requests to more than one origin.This was introduced in undici 7.23.0 via #4385 and affects all versions through 8.1.0.
Patches
Upgrade to undici v7.28.0 or v8.2.0
Workarounds
Use a separate
Socks5ProxyAgentinstance per origin, or avoid usingSocks5ProxyAgentwith multiple origins.Severity
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici WebSocket client vulnerable to denial of service via fragment count bypass
CVE-2026-12151 / GHSA-vxpw-j846-p89q
More information
Details
Impact
The undici WebSocket client enforces
maxPayloadSizeon the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service.Affected applications are those using the undici WebSocket client (
new WebSocket(...)) or theWebSocketStreamAPI that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint.All releases starting at undici 6.17.0 are affected.
Patches
Upgrade to undici v6.27.0, v7.28.0 or v8.5.0.
Workarounds
No workaround is available. The fix must be applied through an upgrade.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to HTTP header injection via Set-Cookie percent-decoding
CVE-2026-9679 / GHSA-p88m-4jfj-68fv
More information
Details
Impact
undici's cookie parser in
parseSetCookiepercent-decodes cookie values viaqsUnescape, turning encoded sequences like%0D%0A,%00,%3B, and%3Dinto their literal byte equivalents. RFC 6265 §5.4 does not specify any decoding and browsers do not decode either.Applications that parse a
Set-Cookieheader and then forward the parsed value into a response header (proxies, middleware, SSR frameworks) become vulnerable to HTTP response header injection: an attacker-controlled upstream can inject arbitrarySet-Cookie,Location, orCache-Controlheaders into the application's downstream response, enabling session fixation, open redirect, or cache poisoning.Affected applications are those that use undici's cookie parsing (
parseSetCookie,parseCookie,getSetCookies) and forward the parsed cookie value into a response header.This was introduced in undici 7.0.0 via #3789.
Patches
Upgrade to undici v6.27.0, v7.28.0 or v8.5.0.
Workarounds
If upgrade is not immediately possible, do not forward values returned by
parseSetCookie/parseCookie/getSetCookiesdirectly into response headers; sanitize the value first to strip or reject CR, LF, NUL,;, and=bytes.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching
CVE-2026-11525 / GHSA-g8m3-5g58-fq7m
More information
Details
Impact
When undici parses a
Set-Cookieheader, it accepts anySameSiteattribute value that containsStrict,Lax, orNoneas a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens:SameSite=NoneOfYourBusinessis parsed asNone, the most permissive setting.SameSite=StrictLaxis parsed asLax, a downgrade fromStrict.Affected applications are those that consume
Set-Cookieheaders from server responses (for example via undici'sfetchor proxy code paths) and then forward or rely on the parsedsameSiteattribute. A malicious or non-compliant server can coerce the consumer's view of a cookie's SameSite policy to a weaker value, silently degrading the SameSite enforcement the cookie is supposed to provide.This was introduced in undici 5.15.0 when the cookies feature was added.
Patches
Upgrade to undici v6.27.0, v7.28.0 or v8.5.0.
Workarounds
After parsing a
Set-Cookieheader, validate that the resultingsameSiteattribute is one of'Strict','Lax', or'None'(exact, case-insensitive) before forwarding or relying on it.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives
CVE-2026-13697 / GHSA-4cwx-7wf7-3272
More information
Details
Summary
Two issues in undici's cache interceptor, both fixed by the same patch on
lib/util/cache.js:Cache-Control: privatedirectives such asprivate=""orprivate=","can be incorrectly stored in the default shared cache, then served to a later caller with the same cache key.privatedirectives in the same header (such aspublic, max-age=60, private, private="hdr") cause an uncaughtTypeErrorin the cache-control parser, terminating the request.Impact
Shared-cache disclosure
Applications using
interceptors.cache()in shared mode may cache a user-specific response and serve it to a later caller with the same cache key. This can disclose private response bodies and headers, includingSet-Cookie.Required conditions:
Cache-Control: public, max-age=300, private="";Varyheader.Parse-time crash
Applications using
interceptors.cache()against an upstream that returns aCache-Controlheader combining unqualifiedprivatewith qualifiedprivate="..."see an uncaughtTypeError: output.private.concat is not a functionduring response handling. The request rejects; depending on the consumer's error handling, the process may exit.Details
private=""is parsed as{ private: [''] }. The shared-cache guard only rejectsprivate === true, so the response can be stored. When served from cache, the previous user's body and headers may be returned to a different user.For the crash variant, an unqualified
privatedirective setsoutput.private = true, then a subsequent qualifiedprivate="hdr"directive attemptsoutput.private.concat(['hdr']), which throws because boolean has noconcatmethod.The patch routes the qualified-directive path through a shared helper that normalizes empty-after-trim arrays to
trueand preserves existingtruevalues, closing both vectors.Patches
Upgrade to
undici7.29.0 or 8.9.0. Both releases fix the qualifiedprivatedirective handling that caused the shared-cache storage and the parser crash.Workarounds
Until patched, avoid shared
interceptors.cache()for user-specific responses, usetype: 'private', or disable caching for affected origins.Credit
Disclosure variant reported by @h0rk1p via HackerOne report #3817497.
Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to downstream response desynchronization via retry interceptor
CVE-2026-16728 / GHSA-8xcm-r25x-g524
More information
Details
Impact
Undici's
interceptors.retry()can deliver a response whose body length does not match theContent-Lengthheader exposed to the application after a retry or resume of a partial response. Applications that useinterceptors.retry()and forward upstream response headers and bodies downstream, for example proxy or gateway applications, may emit an invalid HTTP response with a staleContent-Lengthheader. This can lead to downstream response desynchronization, connection hangs, or response corruption in clients or intermediaries that rely on the forwarded framing metadata.A malicious or faulty upstream can respond to a range request with a
206 Partial Contentresponse such as:and then send only 99 bytes before closing the socket.
interceptors.retry()can then retry withRange: bytes=99-99, receive the final byte, and deliver a 100-byte body to the application while the response headers still containContent-Length: 300from the first response.The bug requires
interceptors.retry()to be enabled, an upstream that returns a partial response with a mismatched framing header, and a downstream forwarder that does not remove or recalculateContent-Length.Patches
Patched in undici v6.28.0, v7.29.0, and v8.9.0. Users should upgrade to one of these versions or later.
Workarounds
interceptors.retry()for untrusted upstreams.Content-Lengthbefore forwarding a response body assembled or transformed by Undici.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to cookie attribute injection via unsanitized domain and unparsed setCookie fields
CVE-2026-16729 / GHSA-v3r7-h72x-cjcm
More information
Details
Impact
The
setCookiefunction has two attribute injection paths.validateCookieDomaindoes not reject semicolons (validateCookiePathalready does at 0x3B), so adomainvalue likeexample.com; SameSite=Nonelands verbatim asDomain=example.com; SameSite=None. Theunparsedarray's loop only checks each entry contains=and does not sanitize values, so an entry likeX-Custom=val; HttpOnlylands unchanged, injectingHttpOnlywithout the caller settingcookie.httpOnly = true.Applications that pass user-controlled input to these fields, typically multi-tenant or reverse-proxy servers that scope session cookies to a tenant-supplied domain, can have SameSite CSRF protections bypassed,
SecureorHttpOnlyforced or stripped, or the intended SameSite tier overridden.Patches
Patched in undici v6.28.0, v7.29.0, and v8.9.0.
Workarounds
domainvalues against the RFC 1034 letter-digit-hyphen set before passing tosetCookie.unparsedfield.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to cross-user information disclosure via whitespace around equals in Cache-Control directives
CVE-2026-14643 / GHSA-jr45-8vmc-qm54
More information
Details
Impact
Undici's cache interceptor mishandles optional whitespace (OWS) placed around the
=of a qualifiedno-cacheorprivateCache-Control directive, such asno-cache ="authorization"(OWS before=) orno-cache= "authorization"(OWS after=). The parser either drops the directive entirely or stores a field name with literal quote characters, so the downstream cache decisions do not recognize the qualification and the response is stored.In shared-cache mode, this allows a response containing one user's authenticated data to be served from cache to a subsequent caller, including an unauthenticated caller, when both requests resolve to the same cache key. The impact class is identical to CVE-2026-9678 (GHSA-pr7r-676h-xcf6); this advisory covers the whitespace-around-
=bypass that the earlier fix did not normalize.Affected applications are those that explicitly enable the cache interceptor (
interceptors.cache()) in shared mode, forwardAuthorizationheaders upstream, and receive cacheable responses with qualifiedprivateorno-cachedirectives whose field-name list is padded with OWS around the=.Patches
Upgrade to undici v7.29.0 or v8.9.0.
Workarounds
If upgrade is not immediately possible, disable shared-cache mode for traffic that includes
Authorizationheaders, avoid caching responses to authenticated requests, or addVary: Authorizationupstream.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to CRLF Injection via blob-like body 'type' property
CVE-2026-15157 / GHSA-m8rv-5g2x-5cg5
More information
Details
Impact
When an application passes a duck-typed blob-like body to undici's HTTP/1.1 dispatcher (via
request(),stream(),pipeline(), ordispatch()) with a.typederived from untrusted input, an attacker can inject CRLF sequences (\r\n) to append arbitrary HTTP headers and potentially smuggle a second request past the upstream.The vulnerable branch in
lib/dispatcher/client-h1.jspushesbody.typedirectly into the outgoing headers with no validation, while every other header path in undici goes throughisValidHeaderValue():The bug requires a hand-rolled duck-typed blob object or a Blob subclass with a controlled
.type. NativeBlobis safe because its constructor strips CRLF from.type.fetch()is unaffected because it validates via theHeadersclass. Ecosystem consumers that build duck-typed blob shapes from user input includeform-data-encoder,formdata-polyfill, andformdata-node.Same defect class as
CVE-2022-35948(explicitcontent-typesink, fixed in undici 5.8.2) andCVE-2026-1527(upgradeoption sink, fixed in 6.24.0 / 7.24.0), both closed by addingisValidHeaderValue()on their respective sinks. This branch was missed.Patches
Patched in undici v6.28.0, v7.29.0, and v8.9.0. Users should upgrade to one of these versions or later.
Workarounds
content-typeheader on the request options (skips the vulnerable branch).Blob(orfetch-blob) instead of a hand-rolled duck-typed object..type.fetch()instead of the non-fetchAPIs.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to Denial of Service via WebSocketStream unclean close
CVE-2026-85014 / GHSA-rx4f-c7p8-82vq
More information
Details
Impact
undici's
WebSocketStreamcrashes the client process when a WebSocket connection is closed abruptly without a close handshake. On such an unclean close, the internal socket-close handler callsabort()on the writable stream even when the application holds a writer lock. Per the WHATWG Streams standard, aborting a locked stream returns a promise that rejects with aTypeError, and the handler discards that promise. The unobserved rejection surfaces as anunhandledRejectionand, under Node.js's default behavior, terminates the process.A malicious or compromised WebSocket server can crash a client with a single connection teardown (a TCP reset, a proxy teardown, or a protocol-violating frame). Affected applications are those using the
WebSocketStreamAPI and writing through a writer, which is the standard way to write.All releases from undici 7.0.0 are affected. WebSocketStream was introduced in 7.0.0.
Patches
Upgrade to undici v7.29.1 or v8.10.2.
Workarounds
No workaround is available.
Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to caching and replay of unsafe HTTP method responses
CVE-2026-85008 / GHSA-8436-99hf-9mmv
More information
Details
Impact
undici's
interceptors.cache()documents that it caches only safe HTTP methods. However, its internal skip-list is built by subtracting the configured methods from the safe-methods set, so an unsafe method (POST,PUT,PATCH,DELETE) never lands in the skip-list and is looked up against the cache store. Combined with the storage gate (canCacheResponse) having no method check, a heuristically-cacheable response (for example a404) with an explicitCache-Control: max-age=...to an unsafe method is stored and replayed on a subsequent identical request. The application's state-changing request never reaches the origin, and undici serves a fabricated response from the cache instead. This occurs with the default configuration (methods: ['GET']), which the public API does not allow widening to unsafe methods, so no application misuse is required; an untrusted origin can trigger it purely through its own response headers.Patches
Upgrade to
7.29.1or8.10.2. The cache interceptor no longer reads from or writes to the cache for unsafe HTTP methods, while still invalidating existing cache entries on successful unsafe requests.Workarounds
None.
Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to TLS certificate validation bypass via dropped connect options in BalancedPool
CVE-2026-84961 / GHSA-w293-vg96-wgc3
More information
Details
Impact
undici's
BalancedPoolpasses its constructor options through a JSON-based deep clone (JSON.parse(JSON.stringify(...))) before forwarding them to each per-upstreamPool. JSON cannot represent functions, so a caller-suppliedconnectortlsoption containing acheckServerIdentitycallback (or a custom connector function) is silently dropped before it reaches the TLS layer. As a result, a TLS peer whose certificate a customcheckServerIdentitywas written to reject, but which passes Node's default hostname and chain checks, is silently accepted when the request is made throughBalancedPool.Client,Pool,Agent, andRoundRobinPooldestructureconnect/tlsbefore the clone and are not affected. Only applications that useBalancedPoolwith a function-valuedconnect/tlsoption (such as a customcheckServerIdentityor connector) are affected.Patches
Upgrade to
7.29.1or8.10.2.BalancedPoolnow preserves theconnectandtlsoptions outside the JSON clone, so custom TLS verification callbacks are forwarded to each upstream unchanged.Workarounds
Use
Client,Pool, orAgentinstead ofBalancedPoolfor connections that rely on a customcheckServerIdentityor connector, until upgraded.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
undici vulnerable to response truncation via oversized chunked responses in the dump interceptor
CVE-2026-84947 / GHSA-2gqq-gqf2-x968
More information
Details
Impact
undici's
interceptors.dump()reads and discards response bodies up to a configurablemaxSize. When a response declares aContent-Lengththat exceedsmaxSize, the request is aborted cleanly. When a response is sent chunked (noContent-Length) and its body exceedsmaxSize, it is not aborted: the interceptor ends the response early once the accumulated size reachesmaxSize, and continued delivery from the parser triggers an internal assertion that is caught and turned into a request abort and connection tear-down. The application observes a misleading200with an empty or truncated body while the connection is disconnected. Any application using the dump interceptor against untrusted or misbehaving upstreams is affected.Patches
Upgrade to
7.29.1or8.10.2. The dump interceptor now enforcesmaxSizeon both the declared and the received body size, aborting the request with aRequestAbortedErrorinstead of returning a truncated response.Workarounds
None. Avoid using
interceptors.dump()with untrusted upstreams until upgraded.Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:NReferences