CVE-2026-2458

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to properly validate team membership when searching channels which allows a removed team member to enumerate all public channels within a private team via the channel search API endpoint.. Mattermost Advisory ID:...

PT-2023-32671 · Unknown · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost affected versions not specified Description: The issue concerns a failure to validate route parameters in the Mattermost webapp, specifically in the //channels/ path, allowing an attacker to perform a client-side path traversal...