CVE-2025-66416: Mcp Missing Dns Rebinding Protection

A custom server configuration misses automatic DNS rebinding protection when bound to localhost. This was specific to FastMCP's 'transport_security' handling.

Provally CuratedPublic repositoryMediumMedium confidenceVerifiedApache-2.0

Python

greprules fetch cve-2025-66416-mcp-missing-dns-rebinding-protection --engine opengrep

Description

A custom server configuration misses automatic DNS rebinding protection when bound to localhost. This was specific to FastMCP's 'transport_security' handling.

License: Apache-2.0
Source context: Public repository
Source: Provally CVE rule catalog
Validation status: Verified
Quality signals: 3.5K downloads
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