CVE-2026-86348

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CVSS 3.1

4.3 medium

EPSS

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Published

Sep 14, 2026 (1d ago)

Modified

Sep 14, 2026

Description

Mattermost versions <=11.9 11.0.9 11.4.8 11.7.7 10.22.11.0 fail to recover from handler panics, which allows an authenticated user to crash the plugin via a post-action request with an unexpected field type.. Mattermost Advisory ID: MMSA-2026-00701

Weakness: CWE-704
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

NVD CVE.org GitHub PoCs EPSS (—)

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