Repository Ownership Validation Flaw in Gitea by Gitea
CVE-2026-20897

9.1CRITICAL

Key Information:

Vendor

Gitea

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

What is CVE-2026-20897?

Gitea is affected by a vulnerability where insufficient validation of repository ownership allows a user with write access to one repository to delete Git LFS locks from other repositories. This flaw can lead to unauthorized actions and potential data integrity issues, impacting collaborative environments and workflows.

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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/36344
patch
https://github.com/go-gitea/gitea/pull/36349
patch

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

spingARbor
JSON
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