CVE-2026-20896
Gitea Docker image trusts spoofable reverse-proxy headers by default
- State
- Published
- Severity
- 9.8 Critical
- Published
- Jul 3, 2026
- Updated
- Jul 7, 2026
- Reserved
- Mar 3, 2026
Description
Gitea Docker image versions up to and including 1.26.2 use REVERSE_PROXY_TRUSTED_PROXIES=* by default, allowing any source IP to impersonate a user when reverse-proxy authentication headers such as X-WEBAUTH-USER are enabled.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Gitea |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Gitea Open Source Git ServerGitea |
|
References
- GitHub Security Advisoryvendor-advisory
- GitHub Pull Request #38151patch
- Gitea v1.26.3 Releaserelease-notes
- Gitea v1.26.4 Release Blog Postrelease-notes
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