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CVE-2026-4646

MEDIUM · CVSS 4.3 EPSS 0.33%

Source: NVD + CISA KEV + EPSS · Published: 2026-05-22 · Last synced: 2026-06-20

CyberRota Analysis

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CVE
CVE-2026-4646
Severity
MEDIUM
CVSS
4.3
EPSS
0.33%

Original NVD Description

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint.. Mattermost Advisory ID: MMSA-2026-00638