High severity7.2GHSA Advisory· Published May 29, 2026· Updated Jun 3, 2026
CVE-2026-45609
CVE-2026-45609
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.springaicommunity:mcp-client-securityMaven | < 0.1.9 | 0.1.9 |
Affected products
1- Range: < 0.1.9
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-qjp4-4jvr-xqg3ghsaADVISORY
- github.com/spring-ai-community/mcp-security/security/advisories/GHSA-qjp4-4jvr-xqg3nvdMitigationVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-45609ghsaADVISORY
- github.com/spring-ai-community/mcp-security/commit/e6b67d8a67cd7acbee6e4c0741c385d62e3ed576ghsaWEB
- github.com/spring-ai-community/mcp-security/pull/68ghsaWEB
- github.com/spring-ai-community/mcp-security/releases/tag/v0.1.9ghsaWEB
News mentions
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