Vulnerability · Published Jan 22, 2026 · Assigned by Gitea
CVE-2026-20736Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check
High 7.5
In plain English
A high-severity improper access control in Gitea Open Source Git Server from Gitea. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 62.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.gitea.io/gitea | 1.25.4 | GHSA-hgr3-x44x-33hx |
| Go | code.gitea.io/gitea | 1.25.4 | GO-2026-4367 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gitea | Gitea Open Source Git Server | 0 – through 1.25.3 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
References
- GitHub Security Advisory vendor-advisory
- GitHub Pull Request #36320 patch
- Gitea v1.25.4 Release release-notes
- Gitea v1.25.4 Release Blog Post release-notes
- https://access.redhat.com/security/cve/CVE-2026-20736 vdb-entry, x_refsource_REDHAT
- RHBZ#2432205 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json x_sadp-csaf-vex