CVE-2024-24988

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

CVSS 4.3 MEDIUMEPSS 0.7%CWE-400

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 Feb 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected products

Mattermost · Mattermost

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References

https://mattermost.com/security-updates