What’s Vulnerable › Vulnerabilities

CVE-2026-34966: Gitea prior to 1.27.0 SSRF via Migration URI Fetch Bypass

• Severity: high (CVSS 7.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-10-08
• Weakness: CWE-918

Description

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.

Affected products

• Gitea Open Source Git Server: through 1.26.4

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

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