What is CVE-2023-2831?

CVE-2023-2831 is a medium-severity vulnerability in Mattermost, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2023-06-16.

How severe is CVE-2023-2831?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Resource exhaustion in Mattermost

CVE-2023-2831

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.007 (48.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Mattermost — versions 0, 7.10.0, 7.1.10

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-2831?: CVE-2023-2831 is a medium-severity vulnerability in Mattermost, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2023-06-16.
How severe is CVE-2023-2831?: Medium severity. CVSS v3 base score is 4.3 out of 10.