Gitea up to 28.2.x Actions Task Token /api/v1/user/repos privileges management

Summaryinfo

A vulnerability marked as problematic has been reported in Gitea up to 28.2.x. Impacted is an unknown function of the file /api/v1/user/repos of the component Actions Task Token. This manipulation causes privileges management. This vulnerability appears as CVE-2026-112887. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Gitea up to 28.2.x. Affected by this vulnerability is an unknown code of the file /api/v1/user/repos of the component Actions Task Token. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality. The summary by CVE is:

Gitea Actions task tokens authenticate to the REST API as a shared system user with a negative ID, which repository, organization, project and key filters treated as having no owner restriction, and the token carried no API scope to restrict user-scoped routes. A user who can run a workflow could use the job's token with `GET /api/v1/user/repos` to list every repository on the instance, including private repositories of other users and organizations, with their metadata. Repository contents remained protected by per-repository permission checks. System users now own nothing, and `/api/v1/user` routes other than `GET /api/v1/user` accept only individual and bot accounts.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-112887 since 11/01/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 28.3.0 eliminates this vulnerability.

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Productinfo

Name

• Gitea

Version

• 28.0
• 28.1
• 28.2

License

• open-source

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CPE 2.2info

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