CVE-2026-3116

published 2026-03-26

CVE-2026-3116: Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause…

Priority P4 26 medium 4.9 CVSS 3.1

AV N AC L PR H UI N S U C N I N A H

Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589

Affected

5 ranges

Vendor	Product	Version range	Fixed in
mattermost	mattermost	<= 11.0.4	—
mattermost	mattermost_server	>= 10.11.0 < 10.11.12	10.11.12
mattermost	mattermost_server	>= 11.2.0 < 11.2.4	11.2.4
mattermost	mattermost_server	>= 11.3.0 < 11.3.2	11.3.2
mattermost	mattermost_server	>= 11.4.0 < 11.4.1	11.4.1

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CWE-400