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.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-4xx9-vc8v-87hv Gitea does not properly validate repository ownership when linking attachments to releases
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 23 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 23 Jan 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea
Vendors & Products Gitea
Gitea gitea

Thu, 22 Jan 2026 23:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Gitea: Cross-Repository Authorization Bypass via Release Attachment Linking Leads to Private Attachment Disclosure
Weaknesses CWE-284
CWE-639
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-01-23T21:53:41.649Z

Reserved: 2026-01-08T23:02:37.548Z

Link: CVE-2026-20912

cve-icon Vulnrichment

Updated: 2026-01-23T17:51:26.556Z

cve-icon NVD

Status : Received

Published: 2026-01-22T22:16:19.297

Modified: 2026-01-23T22:16:20.590

Link: CVE-2026-20912

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-23T10:27:11Z

Weaknesses