Moderate severityOSV Advisory· Published Jan 22, 2026· Updated Jan 23, 2026
Gitea: Cross-Repository Authorization Bypass via Release Attachment Linking Leads to Private Attachment Disclosure
CVE-2026-20912
Description
Gitea does not properly validate repository ownership when linking attachments to releases. An attachment uploaded to a private repository could potentially be linked to a release in a different public repository, making it accessible to unauthorized users.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/go-gitea/giteaGo | < 1.25.4 | 1.25.4 |
Affected products
4- osv-coords3 versionspkg:bitnami/giteapkg:golang/github.com/go-gitea/giteapkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6
< 1.25.4+ 2 more
- (no CPE)range: < 1.25.4
- (no CPE)range: < 1.25.4
- (no CPE)range: < 0.0.20260205T172317-150000.1.146.1
Patches
Vulnerability mechanics
References
9- github.com/go-gitea/gitea/pull/36320ghsapatchWEB
- github.com/go-gitea/gitea/pull/36355ghsapatchWEB
- github.com/advisories/GHSA-4xx9-vc8v-87hvghsaADVISORY
- github.com/go-gitea/gitea/security/advisories/GHSA-vfmv-f93v-37mwmitrevendor-advisory
- nvd.nist.gov/vuln/detail/CVE-2026-20912ghsaADVISORY
- blog.gitea.com/release-of-1.25.4ghsaWEB
- blog.gitea.com/release-of-1.25.4/mitrerelease-notes
- github.com/go-gitea/gitea/commit/fbea2c68e8df11cfa94e8ead913b79946780ed30ghsaWEB
- github.com/go-gitea/gitea/releases/tag/v1.25.4ghsarelease-notesWEB
News mentions
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