High 7.7Published Jun 24, 2026

CVE-2026-25119Gogs: Authentication Bypass via Unvalidated Reverse Proxy Headers

Updated under an hour ago (Oct 27, 2026, 10:20 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-290
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jun 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

gogs gogs gogs:gogs (from the name)	before 0.14.3	CNA record

References

References

https://github.com/gogs/gogs/security/advisories/GHSA-w6j9-vw59-27wv	x-refsource-confirm
https://github.com/gogs/gogs/pull/8264	x-refsource-misc
https://github.com/gogs/gogs/commit/0089c4c8e5b8d99eb6e5c8727f8f40d765f1f58a	x-refsource-misc
https://github.com/gogs/gogs/releases/tag/v0.14.3	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.