VULNERABILITY INTELLIGENCE

CVE-2024-39274

CVSS score8.7 HIGH
EPSS probability0.34%
CISA KEVNot currently listed
Published2024-08-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels

Weakness classification

  • CWE-284: Improper Access Control

Primary references