Vulnerability Database

309,364

Total vulnerabilities in the database

CVE-2023-28357

A vulnerability has been identified in Rocket.Chat, where the ACL checks in the Slash Command /mute occur after checking whether a user is a member of a given channel, leaking private channel members to unauthorized users. This allows authenticated users to enumerate whether a username is a member of a channel that they do not have access to.

  • Published: May 11, 2023
  • Updated: Nov 16, 2025
  • CVE: CVE-2023-28357
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWEs:

Software From Fixed in
rocket.chat / rocket.chat - 6.0.0