VULNERABILITY INTELLIGENCE

CVE-2026-45609

CVSS score7.2 HIGH
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-05-29
Last modified2026-07-21
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Description

mcp-security provides Security and Authorization support for Model Context Protocol in Spring AI. Prior to 0.1.9, the mcp-security framework fails to implement the mandatory SSRF mitigations outlined in the Model Context Protocol (MCP) security specifications. Specifically, it processes untrusted URLs for OAuth-related discovery and metadata without verifying if the targets are malicious or internal to the network. This only affects installations with Dynamic Client Registration (DCR) enabled This vulnerability is fixed in 0.1.9.

Weakness classification

  • CWE-918: Server-Side Request Forgery (SSRF)

Primary references