Security Advisory

CVE-2026-3495

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-18 06:58:29

Last updated 2026-05-18 14:33:30

Assigner Mattermost

CVSS score 3.8

State PUBLISHED

Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to escape some variables that could contain malicious content during error page composition which allows an attacker with access to edit some site configuration to execute some malicious code via injecting some JS as part of those values.. Mattermost Advisory ID: MMSA-2026-00622

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