CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 5.3. See the original NVD description below for full technical details.
CVE
CVE-2026-6046
Severity
MEDIUM
CVSS
5.3
EPSS
0.19%
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 validate that a username returned during bot registration belongs to a bot account, which allows an unprivileged attacker to intercept private messages sent by plugins via direct message channels by pre-registering a user account with a predictable plugin bot username.. Mattermost Advisory ID: MMSA-2026-00649
Related CVEs
Other vulnerabilities affecting the same vendor(s)