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CVE-2026-20888

Gitea Pull Requests Auto-Merge: Read-Only Users Can Cancel Scheduled Auto-Merge via Web Endpoint (Authorization Bypass)

Published: Jan 22, 2026Updated: Jan 29, 2026 Sources: CVE List NVD GHSACWE-284
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.3%
Top 78.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Gitea does not properly verify authorization when canceling scheduled auto-merges via the web interface. A user with read access to pull requests may be able to cancel auto-merges scheduled by other users.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI: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:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-284CWE-862

Affected Products

Gitea Open Source Git ServerGitea
On-prem
DevTools & CI / source-control
giteagitea
On-premDev Tool
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

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/go-gitea/gitea/security/advisories/GHSA-ccq9-c5hv-cf64
github.com
https://github.com/go-gitea/gitea/pull/36341
github.com
https://github.com/go-gitea/gitea/pull/36356
github.com
and 5 more references View all →

Timeline

Published
Jan 22, 2026
Last Updated
Jan 29, 2026

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