CVE-2026-6343

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CVSS 3.1

4.3 medium

EPSS

<1%p6

Published

May 18, 2026 (May 18, 2026)

Modified

Jun 17, 2026

Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check public/private permissions which allows members without these permissions to access public playbooks via /get.. Mattermost Advisory ID: MMSA-2026-00591

Vendors: mattermost
Products: mattermost server
Weakness: CWE-863
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.2%)

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