CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.0. It may be remotely exploitable.
CVE
CVE-2026-6957
Severity
HIGH
CVSS
8
EPSS
0.30%
Original NVD Description
Mattermost Plugins versions <=1.1.5 fail to sanitize filenames received from federated peers before using them to construct export destination paths, which allows an administrator of a remote federated Mattermost server to write files to arbitrary locations within the target server's filestore via a malicious filename delivered through the shared-channel attachment sync protocol. Mattermost Advisory ID: MMSA-2026-00659
Related CVEs
Other vulnerabilities affecting the same vendor(s)