{"id":"CVE-2026-32281","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-32281","generatedAt":"2026-10-28T00:15:22.638Z","title":"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.","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":"2026-04-08T02:16:03.000Z","lastModified":"2026-07-25T10:10:00.000Z","status":"Analyzed","sourceIdentifier":"security@golang.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-295"],"affected":["golang/go"],"epss":{"score":0.00355,"percentile":0.28981,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://go.dev/cl/758061","tags":["Patch"],"source":"security@golang.org"},{"url":"https://go.dev/issue/78281","tags":["Issue Tracking"],"source":"security@golang.org"},{"url":"https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU","tags":["Issue Tracking","Release Notes"],"source":"security@golang.org"},{"url":"https://pkg.go.dev/vuln/GO-2026-4946","tags":["Vendor Advisory"],"source":"security@golang.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-32281","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}