warp-tech Warpgate up to 0.28.3 Role Assignment users.rs api_update_user_role privileges management

Summaryinfo

A vulnerability classified as problematic was found in warp-tech Warpgate up to 0.28.3. Impacted is the function api_update_user_role of the file warpgate-admin/src/api/users.rs of the component Role Assignment. Executing a manipulation can lead to privileges management. This vulnerability is handled as CVE-2026-91167. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in warp-tech Warpgate up to 0.28.3 and classified as problematic. This vulnerability affects the function api_update_user_role of the file warpgate-admin/src/api/users.rs of the component Role Assignment. 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 integrity, and availability. CVE summarizes:

Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. Prior to 0.28.4, PUT /@warpgate/admin/api/users/:id/roles/:role_id reaches api_update_user_role in warpgate-admin/src/api/users.rs through AdminContext but does not require AdminPermission::AccessRolesAssign. A limited administrator with any permission can update expires_at on an existing UserRoleAssignment and clear revoked_at, extending an expiring grant or reinstating a revoked grant. The endpoint cannot create a role assignment that never existed because it returns not found without a matching user and role pair. This issue is fixed in version 0.28.4.

The advisory is available at github.com. This vulnerability was named CVE-2026-91167 since 09/14/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation needs additional levels of successful authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 0.28.4 eliminates this vulnerability.

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Productinfo

Vendor

• warp-tech

Name

• Warpgate

Version

• 0.28.0
• 0.28.1
• 0.28.2
• 0.28.3

Website

• Product: https://github.com/warp-tech/warpgate/

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