CVE-2023-2792

Ephemeral messages return private channel contents in permalink previews

Published Jun 16, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command.


Remediation

Vendor Solution

Update Mattermost to version 7.1.10, 7.8.5, 7.9.4, 7.10.1 or higher

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-34248 Mattermost fails to sanitize ephemeral error messages, allowing an attacker to obtain arbitrary message contents by a specially crafted /groupmsg command.
References
History
Type Values Removed Values Added
Metrics ssvc

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Dec 6, 2024, 11:00 PM
Reserved
May 18, 2023, 12:10 PM
Status
Modified
Published
Jun 16, 2023, 10:15 AM
Modified
Jun 17, 2026, 5:53 AM