CVE-2024-39361

LOW

Mattermost 9.5.0-9.5.5, 9.6.0-9.6.2, 9.7.0-9.7.4, 9.8.0 - Improper Access Control via Post RemoteId Manipulation

Title source: llm

Description

Mattermost versions 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5 fail to prevent users from specifying a RemoteId for their posts which allows an attacker to specify both a remoteId and the post ID, resulting in creating a post with a user-defined post ID. This can cause some broken functionality in the channel or thread with user-defined posts

References (1)

Core 1

Core References

Vendor Advisory

https://mattermost.com/security-updates

Scores

CVSS v3 3.1

EPSS 0.0012

EPSS Percentile 30.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-284

Status published

Products (1)

mattermost/mattermost 9.5.0 - 9.5.6

Published Jul 03, 2024

Tracked Since Feb 18, 2026