CVE-2026-20912
CRITICALGitea < 1.25.4 - Improper Access Control in Release Attachment Linking
Title source: llmDescription
Gitea does not properly validate repository ownership when linking attachments to releases. An attachment uploaded to a private repository could potentially be linked to a release in a different public repository, making it accessible to unauthorized users.
References (5)
Core 5
Core References
Broken Link vendor-advisory
https://github.com/go-gitea/gitea/security/advisories/GHSA-vfmv-f93v-37mw
Issue Tracking, Patch patch
https://github.com/go-gitea/gitea/pull/36320
Issue Tracking, Patch patch
https://github.com/go-gitea/gitea/pull/36355
Release Notes release-notes
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
Release Notes release-notes
https://blog.gitea.com/release-of-1.25.4/
Scores
CVSS v3
9.1
EPSS
0.0037
EPSS Percentile
28.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-284
CWE-639
Status
published
Products (2)
gitea/gitea
< 1.25.4
go-gitea/gitea
0 - 1.25.4Go
Published
Jan 22, 2026
Tracked Since
Feb 18, 2026