CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 4.3. Exploitation may require the attacker to be authenticated.
CVE
CVE-2026-3433
Severity
MEDIUM
CVSS
4.3
EPSS
0.18%
Original NVD Description
Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to restrict role_updated websocket event broadcasts to members of the affected team or channel which allows an authenticated attacker with guest-level access to observe permission scheme change notifications for private teams they are not a member of via the websocket connection.. Mattermost Advisory ID: MMSA-2026-00616
Related CVEs
Other vulnerabilities affecting the same vendor(s)