Detections
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JetBrains WebStorm < 2026.2.3 Code Execution (CVE-2026-123321)

high Nessus Plugin ID 379715

Synopsis

The integrated development environment installed on the remote host is affected by a code execution vulnerability.

Description

The version of JetBrains WebStorm installed on the remote host is prior to 2026.2.3. It is, therefore, affected by a vulnerability:

 - In JetBrains WebStorm before 2026.3, 2026.2.3 code execution via Grunt and Gulp task loading was possible in untrusted projects. (CVE-2026-123321)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to JetBrains WebStorm version 2026.2.3, 2026.3 or later.

See Also

https://www.jetbrains.com/privacy-security/issues-fixed/

Plugin Details

Severity: High

ID: 379715

File Name: jetbrains_webstorm_CVE-2026-123321.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 11/12/2026

Updated: 11/12/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.52

CVSS v2

Risk Factor: High

Base Score: 7.2

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

CVSS Score Source: CVE-2026-123321

CVSS v3

Risk Factor: High

Base Score: 7.8

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

Vulnerability Information

CPE: cpe:/a:jetbrains:webstorm

Required KB Items: installed_sw/JetBrains WebStorm

Patch Publication Date: 11/6/2026

Vulnerability Publication Date: 11/6/2026

Reference Information

CVE: CVE-2026-123321