Leantime up to 3.9.0 Dispatcher Jsonrpc.php editOwn authorization

Summaryinfo

A vulnerability classified as critical has been found in Leantime up to 3.9.0. This issue affects the function editOwn of the file app/Domain/Api/Controllers/Jsonrpc.php of the component Dispatcher. Performing a manipulation results in authorization. This vulnerability is identified as CVE-2026-76647. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Leantime up to 3.9.0. It has been classified as critical. This affects the function editOwn of the file app/Domain/Api/Controllers/Jsonrpc.php of the component Dispatcher. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Leantime JSON-RPC API through version 3.9.0 contains a missing authorization vulnerability in the JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php. The dispatcher does not enforce authorization before invoking service-layer methods, allowing an authenticated user to call methods or act on resources outside their intended permissions. For example, the editOwn method accepts a user-supplied user ID without verifying that it belongs to the caller, allowing an attacker to modify another user's account and set a new password, resulting in account takeover. This vulnerability is distinct from CVE-2026-59712 and CVE-2026-15509 because the root cause is the lack of centralized authorization enforcement in the JSON-RPC dispatcher rather than the behavior of an individual exposed method.

The advisory is shared at vokecyber.com. This vulnerability is uniquely identified as CVE-2026-76647 since 08/19/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/19/2026).

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

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Leantime

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9.0

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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