Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8 (GHSA-424h-xj87-m937)

medium Tenable Self-Hosted Container Security Plugin ID 435655

Description

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

 - Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions
 when adding channel members which allows guest users to add any team members to their private channels via
 the `/api/v4/channels/{channel_id}/members` endpoint (CVE-2025-10545)

See Also

https://github.com/advisories/GHSA-424h-xj87-m937

Plugin Details

Severity: Medium

ID: 435655

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 10/17/2025

Updated: 6/1/2026

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: Low

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2025-10545

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:L/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: 10/16/2025

Vulnerability Publication Date: 10/16/2025

Reference Information

CVE: CVE-2025-10545

cwe: CWE-863