Go crypto/x509 inefficient certificate policy validation DoS
A denial-of-service vulnerability exists in Go's crypto/x509 certificate chain validation logic when processing certificate policies. Validation of otherwise trusted certificate chains becomes unexpectedly inefficient if certificates in the chain contain a very large number of policy mappings. The issue affects policy validation during chain verification for chains issued by a root CA present in VerifyOptions.Roots or in the system certificate pool. The flaw is in the efficiency of certificate policy processing rather than trust establishment itself, allowing excessive computation during x509 verification.
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Recent activity
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.