High severity · published Jan 22, 2026
CVE-2026-20736
Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.
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)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
Gitea Open Source Git Server · Gitea
through 1.25.3 · source: vendor
GI
Gitea · Gitea
before 1.25.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20736
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20736
Release Notes
https://blog.gitea.com/release-of-1.25.4/
Issue Tracking
https://github.com/go-gitea/gitea/pull/36320
Release Notes
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
Broken Link
https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-20736
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2432205
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