Authentication Bypass in Rocket.Chat Communication Platform
CVE-2026-45757

2.3LOW

Key Information:

Vendor

Rocketchat

Status
Rocket.chat
Vendor
CVE Published:
24 June 2026

What is CVE-2026-45757?

Rocket.Chat, a popular open-source communication platform, has a vulnerability that allows inactive users to retain access to authenticated REST endpoints using old login tokens. Even after being marked inactive by an administrator through the deactivation feature, users can still operate with previously issued tokens. This flaw impacts various versions of Rocket.Chat prior to newer updates, emphasizing the importance of upgrading to the latest versions to maintain secure communication.

Affected Version(s)

Rocket.Chat >= 8.5.0-rc.0, < 8.5.0 < 8.5.0-rc.0, 8.5.0

Rocket.Chat >= 8.4.0-rc.0, < 8.4.2 < 8.4.0-rc.0, 8.4.2

Rocket.Chat >= 8.3.0-rc.0, < 8.3.4 < 8.3.0-rc.0, 8.3.4

References

https://github.com/RocketChat/Rocket.Chat/security/adviso...
x_refsource_CONFIRM

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.