CVE-2023-2831: Denial of Service while unescaping a Markdown string

4.3 CVSS

Description

Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters.

Classification

CVE ID: CVE-2023-2831

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.3

Affected Products

Vendor: Mattermost

Product: Mattermost

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.09% (probability of being exploited)

EPSS Percentile: 38.28% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

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

Timeline