Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLE_REVERSE_PROXY_AUTHENTICATION is enabled, Gogs accepts the configured authentication header (default: X-WEBAUTH-USER) directly from client requests without validating that the request originated from a trusted reverse proxy. Any remote attacker who can reach the Gogs service can forge this header to impersonate any user or trigger automatic account creation, completely bypassing authentication. This vulnerability is fixed in 0.14.3.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00864.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
gogs gogs affected
Version Status Constraints
< 0.14.3 affected —

No data.

No data.

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Vendors Products
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Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-w6j9-vw59-27wv Gogs has an Authentication Bypass via Unvalidated Reverse Proxy Headers
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/gogs/gogs/commit/0089c4c8e5b8d99eb6e5c8727f8f40d765f1f58a cve-icon
https://github.com/gogs/gogs/pull/8264 cve-icon
https://github.com/gogs/gogs/releases/tag/v0.14.3 cve-icon
https://github.com/gogs/gogs/security/advisories/GHSA-w6j9-vw59-27wv cve-icon cve-icon
History

Thu, 25 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 25 Jun 2026 06:15:00 +0000

Type Values Removed Values Added
First Time appeared Gogs
Gogs gogs
Vendors & Products Gogs
Gogs gogs

Wed, 24 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Description Gogs is an open source self-hosted Git service. Prior to 0.14.3, when ENABLE_REVERSE_PROXY_AUTHENTICATION is enabled, Gogs accepts the configured authentication header (default: X-WEBAUTH-USER) directly from client requests without validating that the request originated from a trusted reverse proxy. Any remote attacker who can reach the Gogs service can forge this header to impersonate any user or trigger automatic account creation, completely bypassing authentication. This vulnerability is fixed in 0.14.3.
Title Gogs: Authentication Bypass via Unvalidated Reverse Proxy Headers
Weaknesses CWE-290
References
Metrics cvssV4_0

{'score': 7.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-25T17:12:31.750Z

Reserved: 2026-01-29T14:03:42.539Z

Link: CVE-2026-25119

cve-icon Vulnrichment

Updated: 2026-06-25T17:12:25.490Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T06:00:05Z

Weaknesses