Improper Verification of Source of a Communication Channel Affecting openshift-serverless-clients package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.21% (11th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL10-OPENSHIFTSERVERLESSCLIENTS-15773590
  • published26 Mar 2026
  • disclosed23 Mar 2026

Introduced: 23 Mar 2026

CVE-2026-33252  (opens in a new tab)
CWE-940  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 openshift-serverless-clients.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openshift-serverless-clients package and not the openshift-serverless-clients package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.1, the Go SDK's Streamable HTTP transport accepted browser-generated cross-site POST requests without validating the Origin header and without requiring Content-Type: application/json. In deployments without Authorization, especially stateless or sessionless configurations, this allows an arbitrary website to send MCP requests to a local server and potentially trigger tool execution. Version 1.4.1 contains a patch for the issue.

CVSS Base Scores

version 3.1