CVE-2026-1963 WeKan Attachment Storage attachments.js MoveStorageBleed access control
Remote attackers can bypass access controls in WeKan attachment storage to read or modify files without proper authorization.
- 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-2026-1963?
CVE-2026-1963 is a medium-severity missing authorization vulnerability in WeKan, published on 5 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in WeKan up to 8.20. This affects an unknown function of the file models/attachments.js of the component Attachment Storage. The manipulation results in improper access controls. The attack may be launched remotely. Upgrading to version 8.21 mitigates this issue. The patch is identified as c413a7e860bc4d93fe2adcf82516228570bf382d. Upgrading the affected component is advised.
Which versions are affected by CVE-2026-1963?
It affects 1 product.
Products include Wekan Project Wekan.
How do I fix CVE-2026-1963?
No fix has been published for CVE-2026-1963 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-1963 being exploited?
There is no known exploitation of CVE-2026-1963 in the wild and no public exploit code.
Other vulnerabilities in WeKan
- CVE-2026-30843 Wekan has Cross-Board IDOR in Custom Fields Update Endpoints
- CVE-2026-30844 Wekan Vulnerable to SSRF through Lack of Validation or Filtering in Attachment URL Loading
- CVE-2026-30847 Wekan Credential Leak via notificationUsers Publication Exposes Password Hashes and Session Tokens
- CVE-2025-65780 Missing authorization in n/a
- CVE-2026-30846 Wekan Exposes All Global Webhook Integrations through globalwebhooks Publication
Sources
Also known as GHSA-38wp-738r-69jh.