CVE-2023-2831

6.5 mediumEPSS 0.7%

Medium (6.5) in mattermost mattermost. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2023-06-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mattermost:mattermost

References

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

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