CVE-2026-45757 Rocket.Chat: users.deactivateIdle` deactivates accounts without revoking existing login tokens
Deactivated users retain valid login tokens, allowing them to bypass authentication and access authenticated endpoints.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-45757?
CVE-2026-45757 is a low-severity authentication bypass vulnerability in RocketChat Rocket.Chat, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, Rocket.Chat allows users deactivated through users.deactivateIdle to keep using already-issued login tokens. A user that an administrator has marked inactive for idleness can still access authenticated REST endpoints with the old token. This vulnerability is fixed in 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12.
Weakness: CWE-613
Which versions are affected by CVE-2026-45757?
How do I fix CVE-2026-45757?
No fix has been published for CVE-2026-45757 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-2026-45757 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45757 exists.
Sources
Also known as GHSA-6g3w-vg5p-w892.