CVE-2026-104974 Plane: Disabled User Auto-Reactivation on Login

High 8.1 Published Updated

Deactivated users can reactivate their accounts by logging in, bypassing administrative deactivation controls in Plane.

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-2026-104974?

CVE-2026-104974 is a high-severity authentication bypass vulnerability in makeplane plane, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Plane is an open-source project management tool. Prior to 1.4.0, a user whose account has been deactivated by setting is_active=False can still log in with existing credentials. Successful authentication silently changes is_active back to True, reactivating the account without notifying the administrator. This issue is fixed in 1.4.0.

Weakness: CWE-284

Which versions are affected by CVE-2026-104974?

How do I fix CVE-2026-104974?

No fix has been published for CVE-2026-104974 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-2026-104974 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104974 exists.

Sources

Also known as GHSA-rmmf-rj2q-3rrg.

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