Authorization bypass through user-controlled key in Wekan - #VU145029
Published: August 25, 2026
Vulnerability identifier: #VU145029
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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 user to take over arbitrary user accounts.
The vulnerability exists due to authorization bypass through a user-controlled key in the POST /api/createtoken/:userId endpoint when handling requests with an attacker-controlled userId path parameter. A remote privileged user can send a crafted request to generate a valid login token for any user and take over arbitrary user accounts.
The generated token is functionally identical to a normal login token and bypasses the impersonation audit trail.
Affected software
Wekan
Remediation
Install security update from vendor's website.
Wekan - update to 11.08