Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8 (GHSA-m5rv-56xx-hfc6)

high Tenable Cloud Security Plugin ID 438912

Description

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

 - Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly handle very
 long passwords, which allows an attacker to overload the server CPU and memory via executing login
 attempts with multi-megabyte passwords. Mattermost Advisory ID: MMSA-2026-00587 (CVE-2026-24458)

Solution

Update the github.com/mattermost/mattermost-server library and its related packages to version 10.11.11 or later.

See Also

https://github.com/advisories/GHSA-m5rv-56xx-hfc6

Plugin Details

Severity: High

ID: 438912

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 3/18/2026

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: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-24458

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: 3/16/2026

Vulnerability Publication Date: 3/16/2026

Reference Information

CVE: CVE-2026-24458

cwe: CWE-770