High severity · published Oct 6, 2026
CVE-2026-104636
Gitea SSRF through Git HTTP redirects in mirrors and fetches
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
Gitea validated the initial remote URL for push mirrors, wiki remote checks, and fetches of migrated pull request heads, but the subsequent raw Git operations followed HTTP redirects without revalidating the destination. A repository administrator using a policy-allowed endpoint that redirects could make Gitea's Git client send requests to an address that the outbound host policy would otherwise block. The impact depends on the configured policy and the internal services reachable from the server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
Gitea · Gitea
through 1.27.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104636
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104636
vendor-advisory
https://github.com/go-gitea/gitea/security/advisories/GHSA-g4hw-fg4c-89mq
patch
https://github.com/go-gitea/gitea/pull/39426
release-notes
https://blog.gitea.com/release-of-28.0.0/
release-notes
https://github.com/go-gitea/gitea/releases/tag/v28.0.0
More from Gitea
9.8
CVE-2026-60004
Gitea Code Injection Vulnerability
9.8
CVE-2026-59774
Gitea Org-mode file disclosure and code execution
9.8
CVE-2026-73278
Gitea WebAuthn bypass during OAuth and OIDC sign-in
9.8
CVE-2026-94205
Gitea fork workflow approval bypass through maintainer-triggered events
9.8
CVE-2022-42968
Gitea before 1.17.3 does not sanitize and escape refs in the git backend
