fix(deps): Update security vulnerability in pypdf to v6.9.1 [SECURITY]#4248
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This PR contains the following updates:
6.7.3→6.9.1GitHub Vulnerability Alerts
CVE-2026-28351
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter.
Patches
This has been fixed in pypdf==6.7.4.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3664.
CVE-2026-28804
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the
/ASCIIHexDecodefilter.Patches
This has been fixed in pypdf==6.7.5.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3666.
CVE-2026-31826
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing a content stream with a rather large
/Lengthvalue, regardless of the actual data length inside the stream.Patches
This has been fixed in pypdf==6.8.0.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3675.
As far as we are aware, this mostly affects reading from buffers of unknown size, as returned by
open("file.pdf", mode="rb")for example. Passing a file path or aBytesIObuffer to pypdf instead does not seem to trigger the vulnerability.CVE-2026-33123
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and/or large memory usage. This requires accessing an array-based stream with lots of entries.
Patches
This has been fixed in pypdf==6.9.1.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3686.
Release Notes
py-pdf/pypdf (pypdf)
v6.9.1Compare Source
Security (SEC)
Full Changelog
v6.9.0Compare Source
Security (SEC)
Full Changelog
v6.8.0Compare Source
New Features (ENH)
Performance Improvements (PI)
Bug Fixes (BUG)
Full Changelog
v6.7.5Compare Source
Security (SEC)
/Lengthvalue of stream (#3675)New Features (ENH)
Documentation (DOC)
PageObject.replace_contentson PdfReader (#3669)Full Changelog
v6.7.4Compare Source
Security (SEC)
Full Changelog
Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
This PR has been generated by Renovate Bot.