Detections
Analytics

SCA: security update for github.com/mattermost/mattermost/server/v8 (GHSA-w6xh-c82w-h997)

high Tenable Cloud Security Plugin ID 419764

Description

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

 - Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to
 properly handle posts with attachments containing fields that cannot be cast to a String, which allows an
 attacker to cause the webapp to crash via creating and sending such a post to a channel. (CVE-2025-20621)

See Also

https://github.com/advisories/GHSA-w6xh-c82w-h997

Plugin Details

Severity: High

ID: 419764

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 6/1/2026

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: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-20621

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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: 1/16/2025

Vulnerability Publication Date: 1/16/2025

Reference Information

CVE: CVE-2025-20621