CVE-2025-0503

Leaked User IDs and Metadata of Deleted DMs

Published Feb 14, 2025 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
Mattermost versions 9.11.x <= 9.11.6 fail to filter out DMs from the deleted channels endpoint which allows an attacker to infer user IDs and other metadata from deleted DMs if someone had manually marked DMs as deleted in the database.

Remediation

Vendor Solution

Update Mattermost to versions 10.4.0, 9.11.7 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-1723 Mattermost versions 9.11.x <= 9.11.6 fail to filter out DMs from the deleted channels endpoint which allows an attacker to infer user IDs and other metadata from deleted DMs if someone had manually marked DMs as deleted in the database.
References
History
Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server
Type Values Removed Values Added
Metrics epss

{'score': 0.00028}

epss

{'score': 0.00031}

Type Values Removed Values Added
Metrics epss

{'score': 0.00051}

epss

{'score': 0.00028}

Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Mattermost versions 9.11.x <= 9.11.6 fail to filter out DMs from the deleted channels endpoint which allows an attacker to infer user IDs and other metadata from deleted DMs if someone had manually marked DMs as deleted in the database.
Title Leaked User IDs and Metadata of Deleted DMs
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Feb 14, 2025, 6:09 PM
Reserved
Jan 15, 2025, 6:13 PM
Status
Analyzed
Published
Feb 14, 2025, 6:15 PM
Modified
Jun 17, 2026, 8:26 AM