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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-32281

Inefficient policy validation in crypto/x509

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Go standard library crypto/x509

Default version status: unaffected

  • 0 to < 1.25.9affected
  • 1.26.0-0 to < 1.26.2affected

References