CVE-2024-36255

Post actions can run playbook checklist task commands

Description

Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to perform proper input validation on post actions which allows an attacker to run a playbook checklist task command as another user via creating and sharing a deceptive post action that unexpectedly runs a slash command in some arbitrary channel.

Remediation

Solution:

  • Update Mattermost to versions 9.7.0, 9.5.4, 9.6.2, 8.1.13 or higher.

Category

5.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates

Frequently Asked Questions

What is the severity of CVE-2024-36255?
CVE-2024-36255 has been scored as a medium severity vulnerability.
How to fix CVE-2024-36255?
To fix CVE-2024-36255: Update Mattermost to versions 9.7.0, 9.5.4, 9.6.2, 8.1.13 or higher.
Is CVE-2024-36255 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-36255 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-36255?
CVE-2024-36255 affects Mattermost Mattermost.
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