CVE-2024-21848

Users maintain access to active call after being removed from a channel

Published Apr 5, 2024 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel

Remediation

Vendor Solution

Update Mattermost Server to versions 9.5.0, 8.1.11 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-1339 Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel
Github GHSA Github GHSA GHSA-xp9j-8p68-9q93 Mattermost Server Improper Access Control
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost Server
Weaknesses CWE-273
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost
Mattermost mattermost Server
Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Feb 27, 2025, 7:28 PM
Reserved
Apr 3, 2024, 10:03 AM
Status
Analyzed
Published
Apr 5, 2024, 9:15 AM
Modified
Jun 17, 2026, 7:10 AM