CVE-2026-1898 WeKan LDAP User Sync syncUser.js SyncLDAPBleed access control
Remote attackers can bypass access controls in WeKan's LDAP user synchronization, potentially leading to privilege escalation or data modification.
- 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-2026-1898?
CVE-2026-1898 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 determined in WeKan up to 8.20. This affects an unknown part of the file packages/wekan-ldap/server/syncUser.js of the component LDAP User Sync. This manipulation causes improper access controls. It is possible to initiate the attack remotely. Upgrading to version 8.21 is able to mitigate this issue. Patch name: 146905a459106b5d00b4f09453a6554255e6965a. You should upgrade the affected component.
Which versions are affected by CVE-2026-1898?
It affects 1 product.
Products include Wekan Project Wekan.
How do I fix CVE-2026-1898?
No fix has been published for CVE-2026-1898 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-2026-1898 being exploited?
There is no known exploitation of CVE-2026-1898 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-ccch-v5jp-xrrh.