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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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References
Link Providers
https://blog.gitea.com/release-of-1.26.3-and-1.26.4/ cve-icon
https://github.com/go-gitea/gitea/pull/38151 cve-icon
https://github.com/go-gitea/gitea/releases/tag/v1.26.3 cve-icon
https://github.com/go-gitea/gitea/security/advisories/GHSA-f75j-4cw6-rmx4 cve-icon
History

Fri, 03 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title Gitea Docker image trusts spoofable reverse-proxy headers by default
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-07-03T20:19:29.588Z

Reserved: 2026-03-03T03:25:59.988Z

Link: CVE-2026-20896

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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