Is CVE-2026-45609 actively exploited?

No active exploitation of CVE-2026-45609 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45609 be exploited remotely?

Yes. CVE-2026-45609 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45609?

CVE-2026-45609 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-45609

CWE-918Published: May 29, 2026· Updated: Jun 3, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-45609 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.