CVE-2025-0503

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.

Score

CVSS 3.1 5.3 Medium

Status

Analyzed - responsibledisclosure@mattermost.com

Published

2025-02-14

Last modified

2025-02-14

Weaknesses

CWE-754

Affected products

• Mattermost (Mattermost)
• Mattermost Server (Mattermost)

References

• https://mattermost.com/security-updates