Security Advisory

CVE-2026-5132

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-14 10:41:42

Last updated 2026-09-14 11:19:45

Assigner Mattermost

CVSS score 6.5

State PUBLISHED

Description

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to limit size of unpacked SDP messages compressed with zlib, which allows attacker to deny service or crash server via sending many SDP messages that unpack to large size.. Mattermost Advisory ID: MMSA-2026-00643

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