CVE-2026-45609
High
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.
SeverityHigh
CVSS7.2
Exploit probability—
ProductSpringaicommunity Mcp Security
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- springaicommunity mcp_security0.1.9 or later
- org.springaicommunity:mcp-client-security0.1.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| springaicommunity mcp_security | 0.1.0 ≤ v < 0.1.9 | 0.1.9 |
| org.springaicommunity:mcp-client-securityMaven | v < 0.1.9 | 0.1.9 |
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