CVE-2024-39274CWE-284

Malicious remote can add users to arbitrary teams and channels

High · published August 1, 2024

CVSS v3.1
8.7
EPSS
0%
Percentile
26.3
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00341 · 26.3th percentile
Weakness
CWE-284 · Improper Access Control
Published
2024-08-01T14:05Z
EPSS history
Timeline
  • 01 AUG 14:05Z
    Malicious remote can add users to arbitrary teams and channels
    cvelistv5