Detections
Analytics

SCA: security update for github.com/mattermost/mattermost-server (GHSA-jc6w-8r7f-vmp5)

high Tenable Cloud Security Plugin ID 437091

Description

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

 - An issue was discovered in Mattermost Server before 4.5.0, 4.4.5, 4.3.4, and 4.2.2. It allows attackers to
 cause a denial of service (application crash) via an @ character before a JavaScript field name.
 (CVE-2017-18871)

See Also

https://github.com/advisories/GHSA-jc6w-8r7f-vmp5

Plugin Details

Severity: High

ID: 437091

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 1/27/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2017-18871

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: 5/24/2022

Vulnerability Publication Date: 6/19/2020

Reference Information

CVE: CVE-2017-18871

cwe: CWE-248