CVE-2026-24661

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CVSS 3.1

6.5 medium

EPSS

<1%p24

Published

Apr 9, 2026 (Apr 9, 2026)

Modified

Jun 17, 2026

Description

Mattermost Plugins versions <=2.1.3.0 fail to limit the request body size on the {{/changes}} webhook endpoint which allows an authenticated attacker to cause memory exhaustion and denial of service via sending an oversized JSON payload. Mattermost Advisory ID: MMSA-2026-00611

Vendors: mattermost
Products: mattermost
Weakness: CWE-770
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.3%)

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