Vulnerability · Published Jul 3, 2026 · Assigned by Gitea
CVE-2026-28737Gitea 3D file viewer allows stored XSS through glTF extensionsRequired
High 8.7
In plain English
A high-severity cross-site scripting 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 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)0.4%top 64.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Gitea versions from 1.25.0 before 1.26.0 allow stored cross-site scripting through the extensionsRequired field in glTF files rendered by the 3D file viewer.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | code.gitea.io/gitea | 1.26.0 | GHSA-9cpj-qc93-vw8v |
| Go | code.gitea.io/gitea | 1.26.0 | GO-2026-5286 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Gitea | Gitea Open Source Git Server | 1.25.0 – before 1.26.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
References
- GitHub Security Advisory vendor-advisory
- GitHub Pull Request #37233 patch
- Gitea v1.26.0 Release release-notes
- Gitea v1.26.0 Release Blog Post release-notes