Vulnerability advisory

CVE-2026-20897

Gitea Git LFS Lock Deletion Broken Access Control (Cross-Repo IDOR)

Published Jan 22, 2026Updated Oct 28, 2026OSV record ↗

Also known as BIT-gitea-2026-20897GHSA-393c-qgvj-3xphGHSA-rrq5-r9h5-pc7cGO-2026-4363

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected versions

Repository

Affected commits	Fixed by commit
GIT github.com/go-gitea/gitea ↗
All commits before 369830bada2fd8826a5135cb2fc66660a9bef708	`369830bada2fd8826a5135cb2fc66660a9bef708`
Also listed as affected (43) `v1.25.3` `v1.25.2` `v1.25.1` `v1.25.0` `v1.25.0-rc0` `v1.26.0-dev` `v1.25.0-dev` `v1.24.0-dev` `v1.22.0-rc1` `v1.23.0-dev` `v1.22.0-rc0` `v1.21.0-rc0` `v1.22.0-dev` `v1.20.0-rc0` `v1.21.0-dev` `v1.20.0-dev` `v1.19.0-rc0` `v1.18.0-rc0` `v1.19.0-dev` `v1.18.0-dev` `v1.17.0-dev` `v1.16.0-rc1` `v1.15.0-rc1` `v1.16.0-dev` `v1.15.0-dev` `v1.14.0-dev` `v1.13.0-dev` `v1.12.0-dev` `v1.10.5` `v1.11.0-rc1` `v1.10.0-rc1` `v1.11.0-dev` `v1.9.0-rc1` `v1.10.0-dev` `v1.9.0-dev` `v1.7.0-dev` `v1.6.0-rc1` `v1.6.0-dev` `v1.5.0-rc1` `v1.5.0-dev` `v1.1.0` `v1.0.0` `v0.9.99`

Description

Gitea does not properly validate repository ownership when deleting Git LFS locks. A user with write access to one repository may be able to delete LFS locks belonging to other repositories.

CVE-2026-20897

Affected versions

Repository

Description

References