CVE-2025-14822

LOW
2026-01-16 [email protected] GHSA-9r42-rhw3-2222
3.1
CVSS 3.1

CVSS 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

Lifecycle Timeline

3
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 16, 2026 - 09:16 nvd
LOW 3.1

Tags

Information Disclosure

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

Analysis

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 [CVSS 3.1 LOW]

Technical Context

Affects Mattermost Server. 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 Products

Vendor: Mattermost. Product: Mattermost Server.

Remediation

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Priority Score

16
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +16
POC: 0

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CVE-2025-14822 vulnerability details – vuln.today
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