{"cve":"CVE-2026-42508","nvd":{"published":"2026-05-22T04:16:25.440","modified":"2026-09-15T12:17:45.777","status":"Modified","description":"Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-295"],"references":["https://go.dev/cl/781220","https://go.dev/issue/79568","https://groups.google.com/g/golang-announce/c/a082jnz-LvI","https://pkg.go.dev/vuln/GO-2026-5021","https://access.redhat.com/errata/RHSA-2026:23262"],"products":["golang:crypto"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-42508","score":0.0691,"percentile":0.94091,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5cgq-3rg8-m6cv","url":"https://osv.dev/vulnerability/GHSA-5cgq-3rg8-m6cv","summary":"golang.org/x/crypto vulnerable to auth bypass via unenforced @revoked status","modified":"2026-09-10T03:50:48.271021372Z","packages":[{"ecosystem":"Go","name":"golang.org/x/crypto","purl":"pkg:golang/golang.org/x/crypto","ranges":["<0.52.0"],"fixed":["0.52.0"]}]},{"id":"GO-2026-5021","url":"https://osv.dev/vulnerability/GO-2026-5021","summary":"Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts","modified":"2026-09-15T10:41:37.077781877Z","packages":[{"ecosystem":"Go","name":"golang.org/x/crypto","purl":"pkg:golang/golang.org/x/crypto","ranges":["<0.52.0"],"fixed":["0.52.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}