Security Advisory

CVE-2026-26246

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-16 11:33:02

Last updated 2026-03-16 13:49:57

Assigner Mattermost

State PUBLISHED

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to bound memory allocation when processing PSD image files which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted PSD file. Mattermost Advisory ID: MMSA-2026-00572

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