CVE-2023-40703

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400

Affected software

No affected versions have been published.

Timeline

Published
Nov 27, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2023-40703: High severity, CVSS 7.5 | Vulnix