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      <title>CVE-2025-10193 — Neo4j Cypher MCP server is vulnerable to DNS rebinding attacks</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-10193</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; neo4j-cypher MCP server&lt;/p&gt;
&lt;p&gt;DNS rebinding vulnerability in Neo4j Cypher MCP server allows malicious websites to bypass Same-Origin Policy protections and execute unauthorised tool invocations against locally running Neo4j MCP instances. The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; neo4j-cypher MCP server&lt;/p&gt;
&lt;p&gt;DNS rebinding vulnerability in Neo4j Cypher MCP server allows malicious websites to bypass Same-Origin Policy protections and execute unauthorised tool invocations against locally running Neo4j MCP instances. The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.&lt;/p&gt;</content:encoded>
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      <title>GHSA-vcqx-v2mg-7chx — Neo4j Cypher MCP server is vulnerable to DNS rebinding</title>
      <link>https://vulnerability.circl.lu/vuln/ghsa-vcqx-v2mg-7chx</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: mcp-neo4j-cypher&lt;/p&gt;
&lt;p&gt;### Impact
DNS rebinding vulnerability in Neo4j Cypher MCP server allows malicious websites to bypass Same-Origin Policy protections and execute unauthorised tool invocations against locally running Neo4j MCP instances.&amp;amp;nbsp;The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.&lt;/p&gt;
&lt;p&gt;### Patches
CORS Middleware added to Cypher MCP server v0.4.0 that blocks all web-based access by default.&lt;/p&gt;
&lt;p&gt;### Workarounds
If you cannot upgrade to v0.4.0 and above, use stdio mode.&lt;/p&gt;
&lt;p&gt;### References
[Vendor Advisory](https://neo4j.com/security/cve-2025-10193)
https://www.cve.org/CVERecord?id=CVE-2025-10193&lt;/p&gt;
&lt;p&gt;Credits
We want to publicly recognize the contribution of Evan Harris from [mcpsec.dev](https://mcpsec.dev/) for reporting this issue and following the responsible disclosure [policy](https://neo4j.com/trust-center/responsible-disclosure/).&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: mcp-neo4j-cypher&lt;/p&gt;
&lt;p&gt;### Impact
DNS rebinding vulnerability in Neo4j Cypher MCP server allows malicious websites to bypass Same-Origin Policy protections and execute unauthorised tool invocations against locally running Neo4j MCP instances.&amp;amp;nbsp;The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.&lt;/p&gt;
&lt;p&gt;### Patches
CORS Middleware added to Cypher MCP server v0.4.0 that blocks all web-based access by default.&lt;/p&gt;
&lt;p&gt;### Workarounds
If you cannot upgrade to v0.4.0 and above, use stdio mode.&lt;/p&gt;
&lt;p&gt;### References
[Vendor Advisory](https://neo4j.com/security/cve-2025-10193)
https://www.cve.org/CVERecord?id=CVE-2025-10193&lt;/p&gt;
&lt;p&gt;Credits
We want to publicly recognize the contribution of Evan Harris from [mcpsec.dev](https://mcpsec.dev/) for reporting this issue and following the responsible disclosure [policy](https://neo4j.com/trust-center/responsible-disclosure/).&lt;/p&gt;</content:encoded>
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