CVE-2026-68901 Null dereference in wekan
An attacker can cause a remote denial of service in Wekan by sending requests with invalid authentication tokens to board export endpoints, crashing the server process.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-68901?
CVE-2026-68901 is a medium-severity vulnerability in wekan, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Wekan is open source kanban built with Meteor. Prior to 10.38, the /api/boards/:boardId/export, /api/boards/:boardId/attachments/:attachmentId/export, /api/boards/:boardId/export/csv, and /api/boards/:boardId/exportExcel handlers in models/export.js and models/exportExcel.js looked up a user from the attacker-controlled authToken query parameter and immediately called user._id.toString() without checking whether ReactiveCache.getUser() returned undefined. A request for a private board with an unknown token therefore threw a TypeError from an asynchronous route, producing an unhandled rejection that could terminate the Wekan process and deny service to all users. Version 10.38 adds a 401 guard after every export token lookup and wraps export handlers with safeRoute() so unexpected exceptions become controlled responses. This issue is fixed in version 10.38.
Weakness: CWE-476
Which versions are affected by CVE-2026-68901?
How do I fix CVE-2026-68901?
No fix has been published for CVE-2026-68901 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-68901 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-68901 exists.
Sources
Also known as GHSA-3gcg-g6rf-w2rx.