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SCA: security update for github.com/mattermost/mattermost-server (GHSA-9r42-rhw3-2222)

medium Tenable Self-Hosted Container Security Plugin ID 436807

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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 (CVE-2025-14822)

See Also

https://github.com/advisories/GHSA-9r42-rhw3-2222

Plugin Details

Severity: Medium

ID: 436807

Version: Revision 1.11

Type: Local

Family: SCA Checks

Published: 1/17/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2025-14822

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 1/16/2026

Vulnerability Publication Date: 1/16/2026

Reference Information

CVE: CVE-2025-14822