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OpenAdvisories
High · 7.7 CVE-2026-25119 EUVD-2026-39063GHSA-w6j9-vw59-27wvGO-2026-5695

Gogs: Authentication Bypass via Unvalidated Reverse Proxy Headers

Published Jun 24, 2026 · Updated Jun 25, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
gogs gogs < 0.14.3 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go gogs.io/gogs < 0.14.3 0.14.3 GHSA-w6j9-vw59-27wv
Go gogs.io/gogs all versions — GO-2026-5695

Advisories 2

References