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MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Description
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to enforce request body size limits on plugin HTTP endpoints which allows an attacker to cause a denial of service via crafted oversized HTTP requests.. Mattermost Advisory ID: MMSA-2026-00646
Basic Information
ID
CVE-2026-5308
Source
Mattermost
Published
May 22, 2026 at 10:20
Modified
May 22, 2026 at 12:14
Affected Product
Vendor
Mattermost
Product
Mattermost
Version
11.6.0
Affected Versions
Mattermost Mattermost 11.6.0
Mattermost Mattermost 11.5.0
Mattermost Mattermost 11.4.0
Mattermost Mattermost 10.11.0
Mattermost Mattermost 11.5.0
Mattermost Mattermost 11.4.0
Mattermost Mattermost 10.11.0