CVE-2026-20896

9.8 CRITICAL
Published: July 03, 2026 Modified: July 03, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://blog.gitea.com/release-of-1.26.3-and-1.26.4/
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
https://github.com/go-gitea/gitea/pull/38151
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2
https://github.com/go-gitea/gitea/releases/tag/v1.26.3
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.8%
52th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)