CVE-2026-32281

Description

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.

PUBLISHED Reserved 2026-03-11 | Published 2026-04-08 | Updated 2026-04-13 | Assigner Go

Problem types

CWE-407: Inefficient Algorithmic Complexity

Product status

Credits

Jakub Ciolek - https://ciolek.dev

References

go.dev/cl/758061

go.dev/issue/78281

groups.google.com/g/golang-announce/c/0uYbvbPZRWU

pkg.go.dev/vuln/GO-2026-4946

cve.org (CVE-2026-32281)

nvd.nist.gov (CVE-2026-32281)

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