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Vulnerability record · CVE-2026-34966 · published 5 August 2026

CVE-2026-34966: Server-side request forgery (SSRF) vulnerability

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.

8.3 CVSS 4.0 High EPSS 0.39% · top 69.6% CWE-918 · Server-side request forgery (SSRF) Deferred
8.3CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
24 Sep 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-34966), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.