CVE-2024-24988

MEDIUM

Mattermost < 8.1.8 and 9.3.0-9.3.1 - Denial of Service via Custom User Status Emoji Length

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory

https://mattermost.com/security-updates

Scores

CVSS v3 4.3

EPSS 0.0040

EPSS Percentile 61.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (2)

mattermost/mattermost 9.3.0 - 9.3.1Go

mattermost/mattermost_server < 8.1.8

Published Feb 29, 2024

Tracked Since Feb 18, 2026