Medium severity · published Jan 22, 2026
CVE-2026-20800
Notification API Leaks Private Repository Issue Titles After Collaborator Permission Revocation
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
Gitea's notification API does not re-validate repository access permissions when returning notification details. After a user's access to a private repository is revoked, they may still view issue and pull request titles through previously received notifications.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% 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-2026-20800
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20800
Release Notes
https://blog.gitea.com/release-of-1.25.4/
Issue Tracking
https://github.com/go-gitea/gitea/pull/36339
Release Notes
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
Broken Link
https://github.com/go-gitea/gitea/security/advisories/GHSA-g54m-9f6g-wj7q
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