Security Advisory

CVE-2026-3114

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-03-26 16:21:19

Last updated 2026-03-26 17:51:14

Assigner Mattermost

CVSS score 6.5

State PUBLISHED

Description

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate decompressed archive entry sizes during file extraction which allows authenticated users with file upload permissions to cause a denial of service via crafted zip archives containing highly compressed entries (zip bombs) that exhaust server memory.. Mattermost Advisory ID: MMSA-2026-00598

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