SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8 (GHSA-xpg8-8xpv-948p)

high Tenable Self-Hosted Container Security Plugin ID 436080

Description

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

- Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows
unauthenticated users to access sensitive information via WebSocket events (CVE-2025-55070)

See Also

https://github.com/advisories/GHSA-xpg8-8xpv-948p

Plugin Details

Severity: High

ID: 436080

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 11/17/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.68

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-55070

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:H/I:N/A:N

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2025

Vulnerability Publication Date: 11/14/2025

Reference Information

CVE: CVE-2025-55070

cwe: CWE-306