SCA: security update for github.com/mattermost/mattermost/server/v8 (GHSA-vg6q-84p8-qvqh)

medium Tenable Cloud Security Plugin ID 419319

Description

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

- Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow users
to set their own remote username, when shared channels were enabled, which allows a user on a remote to
set their remote username prop to an arbitrary string, which would be then synced to the local server as
long as the user hadn't been synced before. (CVE-2024-39839)

See Also

https://github.com/advisories/GHSA-vg6q-84p8-qvqh

Plugin Details

Severity: Medium

ID: 419319

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2024-39839

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.3

Threat Score: 1.3

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 8/1/2024

Vulnerability Publication Date: 8/1/2024

Reference Information

CVE: CVE-2024-39839

cwe: CWE-284