Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-server, github.com/mattermost/mattermost/server/v8 (GHSA-3x39-62h4-f8j6)

critical Tenable Self-Hosted Container Security Plugin ID 436414

Description

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

 - Mattermost versions 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12, 11.0.x <= 11.0.3 fail to
 properly validate OAuth state tokens during OpenID Connect authentication which allows an authenticated
 attacker with team creation privileges to take over a user account via manipulation of authentication data
 during the OAuth completion flow. This requires email verification to be disabled (default: disabled),
 OAuth/OpenID Connect to be enabled, and the attacker to control two users in the SSO system with one of
 them never having logged into Mattermost. (CVE-2025-12419)

See Also

https://github.com/advisories/GHSA-3x39-62h4-f8j6

Plugin Details

Severity: Critical

ID: 436414

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 12/17/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.39

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2025-12419

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 11/27/2025

Vulnerability Publication Date: 11/27/2025

Reference Information

CVE: CVE-2025-12419