VDB
CVE-2026-54787
CVE-2026-54787
PUBLISHED
CVSS 3.1 LOW
Reported by GitHub_M · Published July 31, 2026
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.
Risk Scores
CVSS 3.1
3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| sigstore | sigstore-go | < 1.2.1 |
| chainguard | trivy | 0 |
| chainguard | crossplane-fips-2.3 | 0 |
| chainguard | teleport-18 | 0 |
| chainguard | zarf | 0 |
| chainguard | crossplane-fips-1.20 | 0 |
| chainguard | crossplane-fips-2.1 | 0 |
| wolfi | kyverno-1.17 | 0, 0 |
| chainguard | skaffold-fips | 0 |
| chainguard | jfrog-cli | 0 |
| wolfi | spire-server | 0 |
| chainguard | kyverno-fips-1.17 | 0 |
| wolfi | teleport-18 | 0 |
| chainguard | tkn-fips | 0 |
| chainguard | kyverno-1.17 | 0, 0 |
| wolfi | trivy-operator | 0 |
| wolfi | trivy | 0 |
| chainguard | trivy-fips | 0 |
| chainguard | trivy-operator | 0 |
| chainguard | cosign-2 | 0 |
…and 68 more
Timeline
- Jul 31, 2026 CVE Published
- Aug 1, 2026 Coalition ESS Score
- Aug 1, 2026 Security Advisory
- Aug 2, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Oct 6, 2026 EPSS Score
- Oct 16, 2026 EPSS Score
- Oct 25, 2026 EPSS Score
References
- https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm x_refsource_CONFIRM
- https://github.com/sigstore/sigstore-go/pull/642 x_refsource_MISC
- https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f x_refsource_MISC
- https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-54787 advisory
- https://github.com/advisories/GHSA-wqqc-jjcq-vfxm advisory