Detections
Analytics

SCA: security update for mcp (GHSA-52jp-gj8w-j6xh)

medium Tenable Cloud Security Plugin ID 445499

Description

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

 - MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to 0.23.0,
 MCP::Server::Transports::StreamableHTTPTransport in the mcp gem does not expire sessions by default, so
 repeated initialize requests retain unbounded ServerSession objects and can exhaust process memory. This
 issue is fixed in version 0.23.0. (CVE-2026-67430)

Solution

Update the mcp library and its related packages to version 0.23.0 or later.

See Also

https://github.com/advisories/GHSA-52jp-gj8w-j6xh

Plugin Details

Severity: Medium

ID: 445499

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 7/30/2026

Updated: 7/30/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

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-2026-67430

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2026

Vulnerability Publication Date: 7/29/2026

Reference Information

CVE: CVE-2026-67430