Description
sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.0, a verifier configured with WithTransparencyLog(N>1) or WithSignedCertificateTimestamps(N>1) counts verified witnesses per entry or per validation path rather than per log authority, allowing a single compromised transparency log or CT log to satisfy multi-log threshold requirements and defeat the multi-log policy. This issue is fixed in version 1.2.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| sigstore | sigstore-go | < 1.2.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sigstore-go | 1.2.1-1 | — |
| Debian 13 | sigstore-go | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | sigstore-go | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | sigstore-go | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | spire1.14 +3 | 1.14.7-0.3.hum1 | RHSA-2026:47889 |
| Red Hat Hardened Images 1 | spire1.15 +3 | 1.15.2-0.3.hum1 | RHSA-2026:44162 |
| Red Hat Hardened Images 1 | trivy | 0.72.0-0.1.3.hum1 | RHSA-2026:47891 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | aactl | 0.4.12-r62 | — |
| Wolfi rolling | crossplane-2.2 +1 | 2.2.3-r7 | — |
| Wolfi rolling | falcoctl | 0.13.0-r13 | — |
| Wolfi rolling | gitsign | 0.16.1-r5 | — |
| Wolfi rolling | kubescape | 4.0.10-r7 | — |
| Wolfi rolling | kyverno-1.17 | 1.17.2-r35 | — |
| Wolfi rolling | kyverno-1.18 +3 | 1.18.2-r0 | — |
| Wolfi rolling | kyverno-cli-1.17 +4 | 1.17.2-r19 | — |
| Wolfi rolling | kyverno-cli-1.18 | 1.18.1-r13 | — |
| Wolfi rolling | kyverno-init-container-1.18 | 1.18.2-r15 | — |
| Wolfi rolling | kyverno-notation-aws | 1.1-r68 | — |
| Wolfi rolling | neuvector-sigstore-interface | 0_git20260617-r5 | — |
| Wolfi rolling | policy-controller +1 | 0.15.1-r18 | — |
| Wolfi rolling | ratify | 1.4.3-r1 | — |
| Wolfi rolling | ratify-licensechecker-compat | 1.4.5-r4 | — |
| Wolfi rolling | slsa-verifier +3 | No fix yet | — |
| Wolfi rolling | tekton-chains | 0.28.0-r0 | — |
| Wolfi rolling | tflint | 0.63.1-r6 | — |
| Wolfi rolling | tkn | 0.45.0-r10 | — |
| Wolfi rolling | trivy | 0.72.0-r4 | — |
| Wolfi rolling | trivy-operator | 0.30.1-r25 | — |
| Wolfi rolling | zarf | 0.80.0-r6 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/sigstore/sigstore-go | < 1.2.0 | 1.2.0 | GHSA-9vcr-p3rj-q5q6 |
Advisories 4
- RHSA-2026:44162 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:47889 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 6, 2026
- RHSA-2026:47891 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Sep 11, 2026
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026