Authorization bypass through user-controlled key in Wekan - #VU150019
Published: September 15, 2026
Vulnerability identifier: #VU150019
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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 user to modify cards on private boards.
The vulnerability exists due to authorization bypass through a user-controlled key in the rules.runButton method when invoking a button rule with an unbound card ID. A remote user can invoke the method with a rule ID from one board and a card ID from another board to modify cards on private boards.
The user only needs comment-only or read-only membership on the board containing the rule.
Affected software
Wekan
Remediation
Install security update from vendor's website.
Wekan - update to 11.77