CVE-2024-24988

Excessive resource consumption when sending long emoji names in user custom status

Description

Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.

Remediation

Solution:

  • Update Mattermost Server to versions 9.4.0, 9.3.1, 9.2.5, 8.1.9 or higher.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.28%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2024-24988?
CVE-2024-24988 has been scored as a medium severity vulnerability.
How to fix CVE-2024-24988?
To fix CVE-2024-24988: Update Mattermost Server to versions 9.4.0, 9.3.1, 9.2.5, 8.1.9 or higher.
Is CVE-2024-24988 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-24988 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-2024-24988?
CVE-2024-24988 affects Mattermost Mattermost.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.