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CVE-2025-14822

LOW CVSS: 3.1 Published: 2026-01-16 Modified: 2026-06-17

Description

Mattermost versions 10.11.x <= 10.11.8 fail to validate input size before processing hashtags which allows an authenticated attacker to exhaust CPU resources via a single HTTP request containing a post with thousands space-separated tokens

Affected Platforms

Mattermost Mattermost Server

Weakness Type

CWE-407, CWE-770

References