CVE-2026-82402
Severity not reportedGogs is an open source self-hosted Git service.
Gogs is an open source self-hosted Git service. Prior to 0.15.0+dev, an unauthenticated attacker can provide a backslash-containing target to the /redirect endpoint, and similar post-action redirect flows are also affected. internal/urlx/urlx.go IsSameSite validates a normalized form of the target while cmd/gogs/internal/web/web.go getRedirect and other callers use the original value in the Location response. This backslash normalization mismatch lets browsers interpret the Location value as a scheme-relative external URL, allowing links on a trusted Gogs domain to redirect victims to attacker-controlled content for phishing. This vulnerability is fixed in 0.15.0+dev.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/gogs/gogs/blob/main/CHANGELOG.md#0150dev-main security-advisories@github.com
- https://github.com/gogs/gogs/commit/0aa820e6d572771551871c0b5f5f32dffc565e3e security-advisories@github.com
- https://github.com/gogs/gogs/pull/8391 security-advisories@github.com
- https://github.com/gogs/gogs/security/advisories/GHSA-3g28-2vwg-gxq6 security-advisories@github.com
- https://github.com/gogs/gogs/security/advisories/GHSA-3g28-2vwg-gxq6 134c704f-9b21-4f2e-91b3-4a467353bcc0