CVE-2026-25119
CVE-2026-25119 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-290.
Key facts
- Severity: High (CVSS 4.0 base score 7.7)
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-39063
- Weakness: CWE-290
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-25119?
- 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.
- How severe is CVE-2026-25119?
- CVE-2026-25119 has a CVSS 4.0 base score of 7.7, rated high severity.
- Is CVE-2026-25119 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-25119?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-25119 have an EU (EUVD) identifier?
- Yes. CVE-2026-25119 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39063.
- When was CVE-2026-25119 published?
- CVE-2026-25119 was published on 2026-06-24 and last updated on 2026-06-25.
References
- https://github.com/gogs/gogs/commit/0089c4c8e5b8d99eb6e5c8727f8f40d765f1f58a
- https://github.com/gogs/gogs/pull/8264
- https://github.com/gogs/gogs/releases/tag/v0.14.3
- https://github.com/gogs/gogs/security/advisories/GHSA-w6j9-vw59-27wv
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