🛡️ CVE-2025-14822
🟢 CVSS 3.1 — Low ✅ No Known Exploit CWE-407 NVD
3.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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

Details

Severity LOW
CVSS Score 3.1
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE CWE-407
Public Exploit ✅ No
Source NVD
Published 2026-01-16
Updated 2026-06-15
Modified 2026-02-27
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/mattermost/mattermost-server
mattermost-server 10.11.0 10.11.9

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