Detections
Analytics

SCA: security update for mcp (GHSA-5h93-6whr-6q8j)

medium Tenable Self-Hosted Container Security Plugin ID 477698

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 1.8.0 until 1.30.0 and 2.2.0, streamable_http_client, streamablehttp_client, sse_client,
 ClientSessionGroup, OAuth, and create_mcp_http_client client paths enable follow_redirects and follow
 redirects to a different origin, forwarding caller-supplied custom credential headers and, for 307 or 308
 responses, the request body. An attacker who can influence a trusted endpoint's redirect destination can
 receive that material. This issue is fixed in versions 1.30.0 and 2.2.0. (CVE-2026-116685)

Solution

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

See Also

https://github.com/advisories/GHSA-5h93-6whr-6q8j

Plugin Details

Severity: Medium

ID: 477698

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/28/2026

Updated: 10/28/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-116685

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

Vulnerability Publication Date: 10/27/2026

Reference Information

CVE: CVE-2026-116685

cwe: CWE-200