SCA: security update for @jshookmcp/jshook (GHSA-c5r6-m4mr-8q5j)

medium Tenable Self-Hosted Container Security Plugin ID 444213

Description

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

- @jshookmcp/jshook is an MCP server that gives AI agents tools for JavaScript analysis and security
research. In version 0.3.1, he network domain has a central SSRF authorization policy that blocks private,
loopback, link-local, and reserved targets unless an explicit authorization object allows private network
access. The policy is enforced by raw HTTP/TCP/TLS RTT tools, but the ICMP probe and traceroute tools
resolve the target and invoke the native ICMP/traceroute sink directly. An MCP client with access to an
active network domain can therefore ask the jshookmcp server to probe internal addresses even when local
SSRF access is disabled for the other raw network tools. This exposes an internal reachability and route
mapping primitive from the server network position. Version 0.3.2 fixes the issue. (CVE-2026-49856)

Solution

Update the @jshookmcp/jshook library and its related packages to version 0.3.2 or later.

Plugin Details

Severity: Medium

ID: 444213

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 7/1/2026

Updated: 8/14/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.2

Percentile: 50.85

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-49856

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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: 7/1/2026

Vulnerability Publication Date: 7/1/2026

Reference Information

CVE: CVE-2026-49856

cwe: CWE-918

Detections

Analytics