CVE-2026-85990
Leantime: Any Authenticated User Can Self-Escalate to Admin via Unauthorized JSON-RPC Methods
- State
- Published
- Severity
- 8.8 High
- Published
- Oct 13, 2026
- Updated
- Oct 16, 2026
- Reserved
- Sep 4, 2026
Description
Leantime is an open source project management system. Prior to 3.10.0, for the provisionally grouped account-creation and plugin-management surfaces, Leantime's JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php exposes public API service methods, while PermissionEnforcer::enforce allows methods that lack a RequiresPermission attribute. A low-privilege authenticated user with an ordinary browser session can send the required X-Requested-With: XMLHttpRequest header and call leantime.rpc.api.api.createApiKeyWithProjects, which reaches Api::createApiKeyWithProjects, with an attacker-chosen role to create an interactive administrator account. The same missing per-method authorization exposes Plugins::installPlugin, Plugins::enablePlugin, Plugins::disablePlugin, and Plugins::removePlugin to ordinary authenticated users, permitting unauthorized plugin management. The complete provisionally grouped issue is fixed in version 3.10.0.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
leantimeLeantime |
|
References
- https://github.com/Leantime/leantime/security/advisories/GHSA-54mm-6729-r5wp
- https://github.com/Leantime/leantime/pull/3583
- https://github.com/Leantime/leantime/pull/3797
- https://github.com/Leantime/leantime/commit/5605e5ee86bbd01acb85c6b5d8fb337faf8bcf02
- https://github.com/Leantime/leantime/commit/7ebf7a9517e2aaa05ec15b8130ab1841a4bde43e
- https://github.com/Leantime/leantime/releases/tag/v3.10.0
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