Authorization Flaw in Gitea Affects Scheduled Auto-Merge Functionality
CVE-2026-20888

4.3MEDIUM

Key Information:

Vendor

Gitea

Status
Gitea Open Source Git Server
Vendor
CVE Published:
22 January 2026

What is CVE-2026-20888?

Gitea contains an authorization flaw that allows users with read access to pull requests to cancel auto-merges initiated by others. This security issue arises from the lack of proper authorization verification in the web interface for managing scheduled auto-merges. As a result, unauthorized users may disrupt collaborative workflows, thereby impacting project integrity and workflow efficiency. It is essential for administrators to review their user permissions and update to the latest patched version to mitigate risk.

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Deploy the Patch

Affected Version(s)

Gitea Open Source Git Server 0 <= 1.25.3

References

https://github.com/go-gitea/gitea/security/advisories/GHS...
vendor-advisory
https://github.com/go-gitea/gitea/pull/36341
patch
https://github.com/go-gitea/gitea/pull/36356
patch

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

spingARbor
JSON
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