{"id":"CVE-2026-54787","revision":"bfd7e37d7bcb40f5b0b83b1efaaff46d","records":[{"revision":"bfd7e37d7bcb40f5b0b83b1efaaff46d","observedAt":"2026-10-25T13:17:34.255+00:00","statement":{"source":"nvd","id":"CVE-2026-54787","aliases":[],"title":"sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a …","description":"sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which can allow an attacker holding expired key material to sign accepted bundles. This issue is fixed in version 1.2.1.","state":0,"publishedAt":"2026-07-31T23:17:25.287+00:00","modifiedAt":"2026-10-23T23:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","score":3.1,"severity":"LOW"}],"references":["https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f","https://github.com/sigstore/sigstore-go/pull/642","https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1","https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54787","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-324"],"productCriteria":[],"sourceDates":{"published":"2026-07-31T23:17:25.287","lastModified":"2026-10-23T23:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-54787","identifiers":["CVE-2026-54787"]},"retained":false,"historicalAffected":[]}],"coverage":[]}