CVE-2026-3116

4.9 MEDIUM

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 a...

Published: 2026-03-26 · Last updated: 2026-06-08

Severity and scoring

CVSS: 4.9 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-400

Affected products

Vendor	Product
mattermost	mattermost_server

Description

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

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-3116
[Vendor advisory]https://mattermost.com/security-updates

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