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.

This critical authentication bypass vulnerability affecting Gitea has been exploited in the wild. Immediate patching is recommended.

Reports indicate this flaw in Gitea is being exploited in the wild. Apply the available patches as soon as possible.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-20896)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the f00e2de8-7d30-48d2-a43d-68206347dea6 advisory.

    The Gitea team reports:

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
445056	SCA: security update for code.gitea.io/gitea (GHSA-f75j-4cw6-rmx4)	Tenable Cloud Security	SCA Checks	Local	critical
445056	SCA: security update for code.gitea.io/gitea (GHSA-f75j-4cw6-rmx4)	Tenable Self-Hosted Container Security	SCA Checks	Local	critical
323685	FreeBSD : gitea -- multiple vulnerabilities (f00e2de8-7d30-48d2-a43d-68206347dea6)	Nessus	FreeBSD Local Security Checks	Local	medium

Detections

Analytics

CVE-2026-20896

critical

Tenable Plugins

critical

critical

medium