CVEvulnerability

CVE-2024-39839

4.3 MEDIUM Published 2024-08-01 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-08-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-284

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow users to set their own remote username, when shared channels were enabled, which allows a user on a remote to set their remote username prop to an arbitrary string, which would be then synced to the local server as long as the user hadn't been synced before.

Affected configurations

• mattermost mattermost server (>= 9.5.0 < 9.5.7) • mattermost mattermost server (>= 9.7.0 < 9.7.6) • mattermost mattermost server (>= 9.8.0 < 9.8.2) • mattermost mattermost server 9.9.0

Related

Weakness · CWE (1)

  • CWE-284 Improper Access Control weakness

References