Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.

Advisories
Source ID Title
EUVD EUVD EUVD-2024-0708 Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.
Github GHSA Github GHSA GHSA-r4fm-g65h-cr54 Mattermost incorrectly allows access individual posts
Fixes

Solution

Update Mattermost Server to versions 9.4, 8.1.9 or higher.


Workaround

No workaround given by the vendor.

References
History

Tue, 22 Apr 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 13 Dec 2024 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost Server
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost
Mattermost mattermost Server

cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2025-04-22T15:52:35.817Z

Reserved: 2024-02-27T19:21:09.017Z

Link: CVE-2024-1952

cve-icon Vulnrichment

Updated: 2024-08-01T18:56:22.570Z

cve-icon NVD

Status : Analyzed

Published: 2024-02-29T11:15:08.213

Modified: 2024-12-13T17:08:36.583

Link: CVE-2024-1952

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.