Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8 (GHSA-4276-cm8c-788h)

low Tenable Self-Hosted Container Security Plugin ID 435035

Description

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

 - Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate authorization for team
 scheme role modifications which allows Team Admins to demote Team Members to Guests via the PUT
 /api/v4/teams/team-id/members/user-id/schemeRoles API endpoint. (CVE-2025-53971)

See Also

https://github.com/advisories/GHSA-4276-cm8c-788h

Plugin Details

Severity: Low

ID: 435035

Version: Revision 1.10

Type: Local

Family: SCA Checks

Published: 8/21/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.51

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS Score Source: CVE-2025-53971

CVSS v3

Risk Factor: Low

Base Score: 3.8

Temporal Score: 3.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/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: 8/21/2025

Vulnerability Publication Date: 8/21/2025

Reference Information

CVE: CVE-2025-53971

cwe: CWE-863