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CVE-2026-93851
HIGH(8.0)CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Risk Signal Score20/100 — NIEDRIG
- CVSS 8 — Hoch
Erwähnungen (letzte 60 Tage)
Artikel
EPSS-Score
0.3%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
8
Technische Schwere
Beschreibung
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10 fail to validate the target post ID in the Agents plugin's mention reminder component, which allows an authenticated user who can post in a channel visible to a system administrator to cause the administrator's browser to send an unintended API request, resulting in replacement of an installed plugin and code execution on the server, via a crafted post containing a forged mention reminder that the administrator clicks. Mattermost Advisory ID: MMSA-2026-00742