CVE-2026-1629

—

CVSS 3.1

4.3 medium

EPSS

<1%p10

Published

Mar 16, 2026 (Mar 16, 2026)

Modified

Jun 17, 2026

Description

Mattermost versions 10.11.x <= 10.11.10 Fail to invalidate cached permalink preview data when a user loses channel access which allows the user to continue viewing private channel content via previously cached permalink previews until cache reset or relogin.. Mattermost Advisory ID: MMSA-2026-00580

Vendors: mattermost
Products: mattermost server
Weakness: CWE-672
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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