Detections
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SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8 (GHSA-3vcm-c42p-3hhf)

medium Tenable Cloud Security Plugin ID 435312

Description

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

 - Mattermost versions 10.10.x <= 10.10.1 fail to properly sanitize user data during shared channel
 membership synchronization, which allows malicious or compromised remote clusters to access sensitive user
 information via unsanitized user objects. This vulnerability affects Mattermost Server instances with
 shared channels enabled. (CVE-2025-9076)

See Also

https://github.com/advisories/GHSA-3vcm-c42p-3hhf

Plugin Details

Severity: Medium

ID: 435312

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 9/16/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.51

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2025-9076

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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: 9/15/2025

Vulnerability Publication Date: 9/15/2025

Reference Information

CVE: CVE-2025-9076

cwe: CWE-862