Detections
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SCA: security update for mcp (GHSA-w4fh-qvv9-3v23)

medium Tenable Self-Hosted Container Security Plugin ID 477691

Description

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

 - The Model Context Protocol Python SDK is the official Python SDK for Model Context Protocol servers and
 clients. From 1.10.0 until 1.30.0 and 2.2.0, server-side bearer authentication configured through
 AuthSettings with token_verifier accepts a valid token issued for another service when the authorization
 server serves multiple resources and the TokenVerifier does not independently validate the aud audience.
 This resource-confusion flaw lets a token holder authenticate to the wrong MCP server and exercise that
 token's resulting access. This issue is fixed in versions 1.30.0 and 2.2.0. (CVE-2026-116684)

Solution

Update the mcp library and its related packages to version 1.30.0 or later.

See Also

https://github.com/advisories/GHSA-w4fh-qvv9-3v23

Plugin Details

Severity: Medium

ID: 477691

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/28/2026

Updated: 10/28/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.55

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-116684

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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: 10/27/2026

Vulnerability Publication Date: 10/27/2026

Reference Information

CVE: CVE-2026-116684

cwe: CWE-863