CVE-2024-39361

Creating posts with user-defined IDs permitted in CreatePost API

State: Published
Severity: 3.1 Low
Published: Jul 3, 2024
Updated: Aug 2, 2024
Reserved: Jul 1, 2024

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

Scores

CVSS	Score	Vector	Source
3.1	3.1 Low	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L	Mattermost

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
MattermostMattermost	9.8.0Affected 9.7.0 through 9.7.4Affected 9.6.0 through 9.6.2Affected 9.5.0 through 9.5.5Affected 9.9.0Not affected 9.8.1Not affected 9.7.5Not affected 9.6.3Not affected 9.5.6Not affected

References

https://mattermost.com/security-updates

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