Authorization bypass through user-controlled key in Leantime - #VU153261
Published: October 5, 2026
Vulnerability identifier: #VU153261
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to missing authorization checks on JSON-RPC methods that accept a user-controlled userId. A remote user can delete or overwrite another user's dashboard and todo state.
Affected software
Leantime
Remediation
Install updates from vendor's website.
Leantime - update to 3.10.0