CVE-2025-24839

Unauthorized AI bot activation via Wrangler plugin

Description

Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to prevent Wrangler posts from triggering AI responses. This vulnerability allows users without access to the AI bot to activate it by attaching the activate_ai override property to a post via the Wrangler plugin, provided both the AI and Wrangler plugins are enabled.

Remediation

Solution:

  • Update Mattermost to versions 10.6.0, 10.5.2, 10.4.4, 9.11.10 or higher.

Category

3.1
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.03%
Affected: Mattermost Mattermost
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-24839?
CVE-2025-24839 has been scored as a low severity vulnerability.
How to fix CVE-2025-24839?
To fix CVE-2025-24839: Update Mattermost to versions 10.6.0, 10.5.2, 10.4.4, 9.11.10 or higher.
Is CVE-2025-24839 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-24839 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-2025-24839?
CVE-2025-24839 affects Mattermost Mattermost.
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