CVE catalog
CVE-2026-49834
DEBIAN-CVE-2026-49834
- Severity
- Medium · CVSS 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.18% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | sigstore-go | 13 | 0.7.1-2 | vulnerable |
| Debian | sigstore-go | 13 | 0.7.3-1 | vulnerable |
| Debian | sigstore-go | 13 | 0.7.3-2 | vulnerable |
| Debian | sigstore-go | 13 | 1.0.0-1 | vulnerable |
| Debian | sigstore-go | 13 | 1.1.4-1 | vulnerable |
| Debian | sigstore-go | 13 | 1.2.1-1 | vulnerable |
| Debian | sigstore-go | 13 | 1.2.2-1 | vulnerable |
| Debian | sigstore-go | 13 | 1.3.0-1 | vulnerable |
| Debian | sigstore-go | 14 | 0.7.1-2 | vulnerable |
| Debian | sigstore-go | 14 | 0.7.3-1 | vulnerable |
| Debian | sigstore-go | 14 | 0.7.3-2 | vulnerable |
| Debian | sigstore-go | 14 | 1.0.0-1 | vulnerable |
| Debian | sigstore-go | 14 | 1.1.4-1 | vulnerable |
| Debian | sigstore-go | 14 | 1.2.1-1 | fixed |
| Cpe | sigstore-go | Not reported | 1.2.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | sigstore-go | deb | 14 | 1.2.1-1 | Not reported | DEBIAN-CVE-2026-49834 | Not reported |
| Cpe | sigstore-go | cpe | Not reported | 1.2.0 | Not reported | NVD-CVE-2026-49834 | Not reported |
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [golang-github-sigstore-sigstore-go-dev]Affected
Source package: [sigstore-go]
Details (2)
0.7.1-2· all · trixieAffected
pypi · sigstore-go · debian · 13
0.7.1-2· all · trixieAffected
pypi · sigstore-go · debian · 13
- [sigstore-go]Affected
Source package: [sigstore-go]
Details (2)
0.7.1-2+b4· amd64 · trixieAffected
pypi · sigstore-go · debian · 13
0.7.1-2+b4· arm64 · trixieAffected
pypi · sigstore-go · debian · 13
Observed:
References
- [https://github.com/sigstore/sigstore-go/commit/dbb07e62623edd5b175fb9dd5a41dcb85a159207]
- [https://github.com/sigstore/sigstore-go/pull/633]
- [https://github.com/sigstore/sigstore-go/releases/tag/v1.2.0]
- [https://github.com/sigstore/sigstore-go/security/advisories/GHSA-9vcr-p3rj-q5q6]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-49834]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-49834]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49834.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]