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.
- CVSS 4.0
- 8.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N - CVSS 3.1
- 7.6
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N - EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-25)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-2wm4-vwp6-v7xc | Go | code.gitea.io/gitea | <1.27.0 | 1.27.0 |
| GHSA-2wm4-vwp6-v7xc | Go | gitea.dev | <1.27.0 | 1.27.0 |
| GO-2026-6039 | Go | gitea.dev | <1.27.0 | 1.27.0 |
References
- https://github.com/go-gitea/gitea
- https://github.com/go-gitea/gitea/commit/b969123b7fac51c88daab5cb64e5b2f4abd53288
- https://github.com/go-gitea/gitea/security/advisories/GHSA-2wm4-vwp6-v7xc
- https://www.vulncheck.com/advisories/gitea-prior-to-ssrf-via-migration-uri-fetch-bypass
- https://github.com/go-gitea/gitea/security/advisories/GHSA-2wm4-vwp6-v7xc