Bug 2511770 (CVE-2026-34966)

Summary: CVE-2026-34966 code.gitea.io/gitea: Gitea: Information disclosure via Server-Side Request Forgery (SSRF) bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Gitea. This server-side request forgery (SSRF) vulnerability allows authenticated attackers to bypass existing protections. By manipulating HTTP fetch operations during migrations or OAuth avatar processing, an attacker can force the Gitea server to make requests to arbitrary internal or external URLs. This could lead to the disclosure of sensitive information, such as database credentials or internal network details, which can then be retrieved by the attacker.
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Description OSIDB Bzimport 2026-08-05 20:51:25 UTC 
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.