CVE-2025-0503 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00039.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Mattermost	Mattermost

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products
Mattermost	Mattermost

References

Link	Providers
https://mattermost.com/security-updates

History

Mon, 14 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00028}`	epss `{'score': 0.00031}`

Sun, 13 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00051}`	epss `{'score': 0.00028}`

Fri, 14 Feb 2025 18:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 14 Feb 2025 18:00:00 +0000

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		https://mattermost.com/security-updates
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'}`

MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-02-14T17:52:17.895Z

Updated: 2025-02-14T18:09:02.166Z

Reserved: 2025-01-15T18:13:55.213Z

Link: CVE-2025-0503

Vulnrichment

Updated: 2025-02-14T18:08:57.286Z

NVD

Status : Received

Published: 2025-02-14T18:15:23.870

Modified: 2025-02-14T18:15:23.870

Link: CVE-2025-0503

Redhat

No data.

OpenCVE Enrichment

Updated: 2025-07-12T15:26:28Z

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