CVE-2026-18795
Medium · 6.4CVSS
6.4
EPSS
0.1%
Published
Oct 16, 2026
CISA due date
—
The record
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to enforce DM/GM check on server side which allows an authenticated user to quarantine a post belonging to DM or GM via direct API call.. Mattermost Advisory ID: MMSA-2026-00756
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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Related vulnerabilities
- CVE-2026-55147 LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application… CWE-862
- CVE-2026-55146 LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application… CWE-862
- CVE-2026-62967 ZTNET is a ZeroTier web UI for private controllers with multiuser and organization… CWE-862
- CVE-2026-62989 Shopper is a Headless e-commerce Admin Panel. CWE-862
- CVE-2026-78403 Stack-based buffer overflow and missing authorization vulnerability in Thales Sentinel… CWE-862
- CVE-2026-62301 MyTube is a self-hosted downloader and player for several video websites. CWE-862
- CVE-2026-119337 RAGFlow is an open-source RAG (Retrieval-Augmented Generation) engine. CWE-862
- CVE-2026-116245 libpq looks a connection service up in the service file of the operating-system account… CWE-862