CVE 4.3 MEDIUM

Unauthorized Read Access to Private Channel Posts via Mattermost Jira Plugin_CVE-2025-13767

4.3 / 10
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

CWE Classification

References

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