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CVE-2026-20800

Notification API Leaks Private Repository Issue Titles After Collaborator Permission Revocation

Published: Jan 22, 2026Updated: Jan 29, 2026 Sources: CVE List NVD GHSACWE-200
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 74.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-200

Affected Products

giteagitea
On-premDev Tool
DevTools & CI / source-control
Gitea Open Source Git ServerGitea
On-prem
DevTools & CI / source-control
github.com/go-gitea/giteaGoOSS Libraries
giteaoss-projectDevTools & CIaka gitea open source git server, gitea
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://blog.gitea.com/release-of-1.25.4/
blog.gitea.com
https://github.com/go-gitea/gitea/pull/36339
github.com
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
github.com
and 5 more references View all →

Timeline

Published
Jan 22, 2026
Last Updated
Jan 29, 2026

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