NULL pointer dereference in Wekan - #VU139865
Published: July 28, 2026
Vulnerability identifier: #VU139865
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wekan.github.io
Affected software:
Wekan
Wekan
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in board export REST endpoints when handling requests with an invalid authToken for a private board. A remote user can send a specially crafted request to cause a denial of service.
The issue affects multiple export routes and is triggered only when the REST API is enabled and a private board identifier is used.
Remediation
Install security update from vendor's website.