CVE-2026-20896

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.

Affected products

Gitea

Fix

Available

CVSS 3.1

9.8 CRITICAL

EPSS

31.8% (98th percentile)

Weakness

CWE-284

NVD status

Deferred

Published

2026-07-03