SSRF in Gitea
CVE-2026-34966
Gitea prior to 1.27.0 contains a server-side request forgery vulnerability that allows authenticated attackers to bypass SSRF protections by exploiting HTTP fetch operations in migration and OAuth avatar code paths that use Go's default http.Get without a custom DialContext. Attackers can supply arbitrary URLs through release asset download URLs, pull-request patch URLs, or OAuth avatar endpoints to reach internal services, cloud instance-metadata endpoints, or read local files such as the application configuration containing database credentials and signing secrets, with exfiltrated content persisted as migration release assets for later retrieval.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.003 (25.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Gitea — versions 0, 1.27.0
Weakness classification (CWE)
References
- Product Advisory (product)
- GitHub Security Advisory (vendor-advisory)
- Patch Commit (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-34966?
- CVE-2026-34966 is a high-severity vulnerability in Gitea, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.6/10. Published 2026-08-05.
- How severe is CVE-2026-34966?
- High severity. CVSS v3 base score is 7.6 out of 10.