CVE-2026-20912

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*

History

No history.

Information

Published : 2026-01-22 22:16

Updated : 2026-07-15 02:18

NVD link : CVE-2026-20912

Mitre link : CVE-2026-20912

CVE.ORG link : CVE-2026-20912

JSON object : View

Products Affected

gitea

gitea

CWE

CWE-284

Improper Access Control

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-283

Unverified Ownership

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