CVE-2024-4182

mattermost: fail to handle JSON parsing errors in custom status values

Published Apr 26, 2024 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Mattermost versions 9.6.0, 9.5.x before 9.5.3, 9.4.x before 9.4.5, and 8.1.x before 8.1.12 fail to handle JSON parsing errors in custom status values, which allows an authenticated attacker to crash other users' web clients via a malformed custom status.

Remediation

Vendor Solution

Update Mattermost Server to versions 9.7.0, 9.6.1, 9.5.3, 9.4.5, 8.1.12 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-1158 Mattermost versions 9.6.0, 9.5.x before 9.5.3, 9.4.x before 9.4.5, and 8.1.x before 8.1.12 fail to handle JSON parsing errors in custom status values, which allows an authenticated attacker to crash other users' web clients via a malformed custom status.
Github GHSA Github GHSA GHSA-8f99-g2pj-x8w3 Mattermost crashes web clients via a malformed custom status
History
Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost
Mattermost mattermost Server
Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Aug 1, 2024, 8:33 PM
Reserved
Apr 25, 2024, 2:04 PM
Status
Analyzed
Published
Apr 26, 2024, 9:15 AM
Modified
Jun 17, 2026, 8:01 AM
Severity
Low
Public date
Apr 26, 2024, 12:00 AM