Back to Database
Status published
Medium
CVE-2024-24988
Excessive resource consumption when sending long emoji names in user custom status
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2024-24988
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Gian Klug (coderion)
References
More from Mattermost
View All →CVE-2025-9084
Open redirect in OAuth login
Low
3.1
CVE-2025-9081
IDOR in board file download allows any user to download any file by UUID
Low
3.1
CVE-2025-9079
Admin RCE via prepackaged plugins by way of misconfigured imports directory
High
8
CVE-2025-9078
Weak cache keys lead to post IDOR and link preview poisoning
Medium
4.3
CVE-2025-9076
Mattermost Server exposes sensitive user credentials during shared channel membership synchronization
Medium
6.5
Affected Vendor
Mattermost
View all reports →Affected Software
Mattermost
Vulnerable Versions:
0, 9.4.0, 9.3.1, 9.2.5, 8.1.9
Timeline
Official Publish:
February 29th, 2024
Last Modified:
August 1st, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L