Insecure Default Initialization of Resource Affecting librechat package, versions <0.8.0-r6


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.03% (9th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LIBRECHAT-14421023
  • published15 Dec 2025
  • disclosed2 Dec 2025

Introduced: 2 Dec 2025

CVE-2025-66414  (opens in a new tab)
CWE-1188  (opens in a new tab)

How to fix?

Upgrade Chainguard librechat to version 0.8.0-r6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream librechat package and not the librechat package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. Prior to 1.24.0, The Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled enableDnsRebindingProtection, a malicious website could exploit DNS rebinding to bypass same-origin policy restrictions and send requests to the local MCP server. This could allow an attacker to invoke tools or access resources exposed by the MCP server on behalf of the user in those limited circumstances. Note that running HTTP-based MCP servers locally without authentication is not recommended per MCP security best practices. This issue does not affect servers using stdio transport. This vulnerability is fixed in 1.24.0.

CVSS Base Scores

version 3.1