CVE-2024-39837 — Improper Access Control in Mattermost Mattermost-server

CWE-284 — Improper Access Control5 documents4 sources
Severity
5.4MEDIUMNVD
CNA3.8
EPSS
0.3%
top 46.85%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Github.com Mattermost Mattermost-serverGithub.com Mattermost Mattermost-server V5Github.com Mattermost Mattermost-server V6+3 more
Timeline
PublishedAug 1
Latest updateAug 6

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitability: 2.8 | Impact: 2.5

Affected Packages6 packages

▶NVDmattermost/mattermost_server9.5.0 — 9.5.7+1
▶Gogithub.com/mattermost_mattermost-server_v5< 5.3.2-0.20240626164322-c758cecaf30c
▶Gogithub.com/mattermost_mattermost-server_v6< 6.0.0-20240626164322-c758cecaf30c

🔴Vulnerability Details

4
OSV
Mattermost did not properly restrict channel creation in github.com/mattermost/mattermost-server↗2024-08-06
▶
CVEList
Malicious remote can create arbitrary channels↗2024-08-01
▶
OSV
Mattermost did not properly restrict channel creation↗2024-08-01
▶
GHSA
Mattermost did not properly restrict channel creation↗2024-08-01
▶
CVE-2024-39837 — Improper Access Control | cvebase