CVE-2026-45609

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.

CVSS v3 7.2 HIGH

7.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/spring-ai-community/mcp-security/security/advisories/GHSA-qjp4-4jvr-xqg3	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:springaicommunity:mcp_security:*:*:*:*:*:*:*:*

History

03 Jun 2026, 14:08

Type	Values Removed	Values Added
First Time		Springaicommunity mcp Security Springaicommunity
References	~~() https://github.com/spring-ai-community/mcp-security/security/advisories/GHSA-qjp4-4jvr-xqg3 -~~	() https://github.com/spring-ai-community/mcp-security/security/advisories/GHSA-qjp4-4jvr-xqg3 - Mitigation, Vendor Advisory
CPE		cpe:2.3:a:springaicommunity:mcp_security::::::::

29 May 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-29 15:16

Updated : 2026-06-03 14:08

NVD link : CVE-2026-45609

Mitre link : CVE-2026-45609

CVE.ORG link : CVE-2026-45609

JSON object : View

Products Affected

springaicommunity

mcp_security

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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