🛡️ CVE-2026-45609
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-918 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE CWE-918
Public Exploit ✅ No
Source NVD
Published 2026-05-29
Updated 2026-06-10
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
mcp-security 0.1.0 0.1.9
org.springaicommunity:mcp-client-security — 0.1.9
unknown — —

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