Hub/AI Security/Advisories/GHSA-9h52-p55h-vw2f
DNS Rebinding Protection Disabled by Default in Model Context Protocol Python SDK for Servers Running on Localhost
MCP Python SDK security advisory.
| GHSA | GHSA-9h52-p55h-vw2f |
|---|---|
| Published | Dec 2, 2025 |
| Severity | High 7.6 |
| CVE | CVE-2025-66416 |
| Status | patched |
| Affected | <1.23.0 |
| Fixed in | 1.23.0 |
| Component | MCP Python SDK |
Sources
Checked 2026-11-04. We copy severity and fix versions from the source and never estimate them.
Affected tools
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