SEPTEMBER 22, 2026
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Case File

CVE-2026-5308

MEDIUM · CVSS 4.9 EPSS 0.25%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-22 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.9. It may lead to a denial-of-service condition.

CVE
CVE-2026-5308
Severity
MEDIUM
CVSS
4.9
EPSS
0.25%

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 enforce request body size limits on plugin HTTP endpoints which allows an attacker to cause a denial of service via crafted oversized HTTP requests.. Mattermost Advisory ID: MMSA-2026-00646

Related CVEs

Other vulnerabilities affecting the same vendor(s)