CVE-2026-55652 Auth bypass in wekan
Unauthenticated attackers can bypass IP allowlists via X-Forwarded-For spoofing to take over any account, including admin, in Wekan.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55652?
CVE-2026-55652 is a critical authentication bypass vulnerability in wekan, published on 15 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wekan is open source kanban built with Meteor. Prior to 9.46, header-login with HEADER_LOGIN_TRUSTED_IPS uses getRequestIp() in server/lib/headerLoginAuth.js to trust the client-supplied X-Forwarded-For header before the real socket address, allowing an unauthenticated attacker to send HEADER_LOGIN_ID for any username and receive a meteor_login_token session, including for admin. This issue is fixed in version 9.46.
Which versions are affected by CVE-2026-55652?
How do I fix CVE-2026-55652?
No fix has been published for CVE-2026-55652 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-55652 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55652 exists.
Sources
Also known as GHSA-jggc-qvfc-jr6x.