Mattermost fails to bound memory allocation when processing DOC files

GHSA-xv2p-wchj-qjhp · CVE-2026-25780 · GO-2026-4733

Published Mar 16, 2026 · Modified Mar 23, 2026

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 DOC files which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted DOC file.. Mattermost Advisory ID: MMSA-2026-00581

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-25780
WEB https://github.com/mattermost/mattermost/commit/86797c508c444e299b20889ce241fde505a402cc
PACKAGE https://github.com/mattermost/mattermost
WEB https://mattermost.com/security-updates

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