CRITICALCVSS 9.8EPSS 0.8%

CVE-2026-20896

CVE-2026-20896 updated by NVD

Published: 2026-07-21
Modified: 2026-10-27
EPSS percentile: 52%
Sources: github-advisory, nvd

Summary

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 packages

Ecosystem	Package	Affected versions	Fixed versions
Go	code.gitea.io/gitea	—	1.26.3

Remediation: Upgrade to 1.26.3 or later.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-20896

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.