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MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Description
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.
Basic Information
ID
CVE-2025-13767
Source
Mattermost
Published
Dec 24, 2025 at 08:01
Affected Product
Vendor
Mattermost
Product
Mattermost
Version
11.1.0
Affected Versions
Mattermost Mattermost 11.1.0
Mattermost Mattermost 11.0.0
Mattermost Mattermost 10.12.0
Mattermost Mattermost 10.11.0
Mattermost Mattermost 11.0.0
Mattermost Mattermost 10.12.0
Mattermost Mattermost 10.11.0