9.1

CVE-2026-20912

Gitea: Cross-Repository Authorization Bypass via Release Attachment Linking Leads to Private Attachment Disclosure

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gitea ≫ Gitea SwPlatform- Version < 1.25.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.42% 0.332
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-283 Unverified Ownership

The product does not properly verify that a critical resource is owned by the proper entity.

CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

CWE-639 Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

https://blog.gitea.com/release-of-1.25.4/
Release Notes
https://github.com/go-gitea/gitea/releases/tag/v1.25.4
Release Notes
https://github.com/go-gitea/gitea/pull/36320
Patch
Issue Tracking
https://github.com/go-gitea/gitea/pull/36355
Patch
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2432219
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20912.json
https://github.com/go-gitea/gitea/security/advisories/GHSA-vfmv-f93v-37mw
Broken Link
https://access.redhat.com/security/cve/CVE-2026-20912