CVE-2026-20896: Gitea Docker image versions up to and including 1.26.2 use REVERSE_PROXY_TRUSTED_PROXIES=* by default, allowing any...
CRITICAL
CVSS 9.8
Exploit Available
1 PoC
Published: July 3, 2026 | Last Modified: July 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.
Ghostwire Analysis — What This Means Practically
- Critical CVSS score indicates maximum severity — remote code execution, authentication bypass, or complete system compromise is likely possible.
- 1 proof-of-concept exploit available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.
This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.
Proof-of-Concept Exploits (1)
Security Coverage (1 articles)
References