CVE-2023-2787

Collapsed Reply Threads APIs leak message contents from private channels

Published Jun 16, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.

Remediation

Vendor Solution

Update Mattermost to version v7.1.10, v7.8.5, v7.9.4, v7.10.1, or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-34243 Mattermost fails to check channel membership when accessing message threads, allowing an attacker to access arbitrary posts by using the message threads API.
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, 11:03 PM
Reserved
May 18, 2023, 11:46 AM
Status
Modified
Published
Jun 16, 2023, 9:15 AM
Modified
Jun 17, 2026, 5:53 AM