CVE Explorer
CVE-2026-54787
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"sigstore-go","vendor":"sigstore","versions":[{"status":"affected","version":"< 1.2.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-324","description":"CWE-324: Use of a Key Past its Expiration Date","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"name":"https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/references/2
{"name":"https://github.com/sigstore/sigstore-go/pull/642","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/sigstore-go/pull/642"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/references/1
{"name":"https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1","tags":["x_refsource_MISC"],"url":"https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/references/3
{"name":"https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9209262647d5d156e7abb10c2ccc5fbc76718e7e938ef021371b84c0687f8a12 · sha256:16521d9cc0bcba33… · /containers/adp/0/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.