CyberRota Analysis
Saldırganın giriş yapmış olması gerekebilir.
CVE
CVE-2026-4915
Severity
MEDIUM
CVSS
6.5
EPSS
0.28%
Original NVD Description
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to filter nil elements from outgoing webhook attachment payloads before processing, which allows an authenticated user to cause a denial of service (server process termination) via a crafted webhook callback response containing a null attachment entry.. Mattermost Advisory ID: MMSA-2026-00641