Vulnerability Report: GO-2026-4947
standard library- CVE-2026-32280
- Affects: crypto/x509
- Published: Apr 07, 2026
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
Affected Packages
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PathGo VersionsSymbols
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before go1.25.9, from go1.26.0-0 before go1.26.2
Aliases
References
- https://go.dev/cl/758320
- https://go.dev/issue/78282
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
- https://vuln.go.dev/ID/GO-2026-4947.json
Credits
- Jakub Ciolek - https://ciolek.dev
Feedback
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