Leantime up to 3.9.x JSON-RPC Dispatcher Jsonrpc.php role privileges management

Summaryinfo

A vulnerability classified as critical has been found in Leantime up to 3.9.x. The impacted element is the function createApiKeyWithProjects/installPlugin/enablePlugin/disablePlugin/removePlugin of the file app/Domain/Api/Controllers/Jsonrpc.php of the component JSON-RPC Dispatcher. This manipulation of the argument role causes privileges management. This vulnerability is tracked as CVE-2026-85990. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Leantime up to 3.9.x. It has been declared as critical. Affected by this vulnerability is the function createApiKeyWithProjects/installPlugin/enablePlugin/disablePlugin/removePlugin of the file app/Domain/Api/Controllers/Jsonrpc.php of the component JSON-RPC Dispatcher. The manipulation of the argument role 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, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-85990 since 09/04/2026. 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.

By approaching the search of inurl:app/Domain/Api/Controllers/Jsonrpc.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.10.0 eliminates this vulnerability.

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Productinfo

Name

• Leantime

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9

Website

• Product: https://github.com/Leantime/leantime/

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