Vulnerability · Published Jul 3, 2026 · Assigned by Gitea
CVE-2026-58426Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write
Critical 9.6
In plain English
A critical-severity security flaw in Gitea Open Source Git Server from Gitea. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.2%top 85.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.gitea.io/gitea | 1.26.2 | GHSA-hg5r-vq93-9fv6 |
| Go | code.gitea.io/gitea | 1.26.2 | GO-2026-6060 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gitea | Gitea Open Source Git Server | 1.22.0 – through 1.26.1 |
Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
References
- GitHub Security Advisory vendor-advisory
- GitHub Pull Request #37707 patch
- Gitea v1.26.2 Release release-notes
- Gitea v1.26.2 Release Blog Post release-notes