CVE-2026-25119
Gogs: Authentication Bypass via Unvalidated Reverse Proxy Headers
Description
Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLE_REVERSE_PROXY_AUTHENTICATION is enabled, Gogs accepts the configured authentication header (default: X-WEBAUTH-USER) directly from client requests without validating that the request originated from a trusted reverse proxy. Any remote attacker who can reach the Gogs service can forge this header to impersonate any user or trigger automatic account creation, completely bypassing authentication. This vulnerability is fixed in 0.14.3.
INFO
Published Date :
June 24, 2026, 8:07 p.m.
Last Modified :
June 24, 2026, 8:07 p.m.
Remotely Exploit :
Yes !
Source :
GitHub_M
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Gogs to version 0.14.3 or later.
- Disable reverse proxy authentication if update is not possible.
- Validate incoming headers from trusted reverse proxies.
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