Authorization bypass through user-controlled key in Wekan - #VU144210
Published: August 18, 2026
Vulnerability identifier: #VU144210
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 delete other users\' comments.
The vulnerability exists due to incorrect authorization in the REST DELETE /api/boards/:boardId/cards/:cardId/comments/:commentId endpoint when handling comment deletion requests. A remote user can send a crafted DELETE request to delete other users\' comments.
The issue affects board members and can bypass the author-or-admin comment deletion policy, including when restrictCommentEditing is enabled.
Affected software
Wekan
Remediation
Install security update from vendor's website.
Wekan - update to 10.74