CVE-2025-14822

Published: Jan 16, 2026

Modified: Jan 16, 2026

PUBLISHED

CVSS v3.1

3.1

LOW

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

Vendor	Product	Versions
Mattermost	Mattermost	affected `10.11.0 - <= 10.11.8` unaffected `11.2.0` unaffected `10.11.9`

Weaknesses (CWE)

CWE-407

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

https://mattermost.com/security-updates

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CVE-2025-14822

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References