Vulnerability Report: GO-2026-4946
- CVE-2026-32281
- Affects: crypto/x509
- Published: Apr 07, 2026
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Affected Packages
-
PathVersionsSymbols
-
before go1.25.9, from go1.26.0-0 before go1.26.2
Aliases
References
- https://go.dev/cl/758061
- https://go.dev/issue/78281
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
- https://vuln.go.dev/ID/GO-2026-4946.json
Credits
- Jakub Ciolek - https://ciolek.dev
Feedback
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