{"id":"CVE-2025-10193","aliases":["EUVD-2025-28908","GHSA-vcqx-v2mg-7chx","PYSEC-2026-1620"],"status":"published","title":"Neo4j Cypher MCP server is vulnerable to DNS rebinding attacks","description":"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.","severity":{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/AU:N/V:D/RE:L/U:Amber","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00221,"percentile":0.12691,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-346"],"published":"2025-09-11T14:05:30Z","modified":"2026-10-28T02:30:48Z","fixes":[{"ecosystem":"PyPI","package":"mcp-neo4j-cypher","fixed_in":["0.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"mcp-neo4j-cypher","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.2.2"},{"fixed":"0.4.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"mcp-neo4j-cypher","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.2.2"},{"fixed":"0.4.0"}]}],"versions":["0.2.2","0.2.3","0.2.4","0.3.0","0.3.1"]},{"source":"osv","ecosystem":"PyPI","package":"mcp-neo4j-cypher","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.2.2"},{"fixed":"0.4.0"}]}],"versions":["0.2.2","0.2.3","0.2.4","0.3.0","0.3.1"]}],"products":[{"vendor":"neo4j","product":"neo4j-cypher mcp server"}],"references":[{"url":"https://neo4j.com/security/cve-2025-10193","tags":["vendor-advisory","advisory","web"]},{"url":"https://github.com/neo4j-contrib/mcp-neo4j/security/advisories/GHSA-vcqx-v2mg-7chx","tags":["third-party-advisory","advisory","web"]},{"url":"https://github.com/neo4j-contrib/mcp-neo4j/releases/tag/mcp-neo4j-cypher-v0.4.0","tags":["release-notes","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-10193","tags":["advisory"]},{"url":"https://github.com/neo4j-contrib/mcp-neo4j/pull/165","tags":["web"]},{"url":"https://github.com/neo4j-contrib/mcp-neo4j/commit/5b9fbdda6401668d7aa006daf7e644805c067c15","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vcqx-v2mg-7chx","tags":["advisory"]},{"url":"https://pypi.python.org","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/10xxx/CVE-2025-10193.json","tags":["advisory"]},{"url":"https://github.com/neo4j-contrib/mcp-neo4j","tags":["package"]},{"url":"https://pypi.org/project/mcp-neo4j-cypher","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-10193","title":"Neo4j Cypher MCP server is vulnerable to DNS rebinding attacks","description":"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.","status":"published","published":"2025-09-11T14:05:30.592Z","modified":"2026-02-26T17:48:41.293Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/AU:N/V:D/RE:L/U:Amber","level":"high","assessor":"cna"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:32:30.9782Z"}],"euvd":[{"id":"EUVD-2025-28908","description":"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.","status":"published","published":"2025-09-11T14:05:30Z","modified":"2026-02-26T17:48:41Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/AU:N/V:D/RE:L/U:Amber","level":"high"}],"updated_at":"2026-11-02T19:48:21.697838Z"}],"ghsa":[{"id":"GHSA-vcqx-v2mg-7chx","title":" Neo4j Cypher MCP server is vulnerable to DNS rebinding ","description":"### Impact\nDNS 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.\u0026nbsp;The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.\n\n### Patches\nCORS Middleware added to Cypher MCP server v0.4.0 that blocks all web-based access by default.\n\n### Workarounds\nIf you cannot upgrade to v0.4.0 and above, use stdio mode.\n\n### References\n[Vendor Advisory](https://neo4j.com/security/cve-2025-10193)\nhttps://www.cve.org/CVERecord?id=CVE-2025-10193 \n\nCredits\nWe 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/).","status":"published","published":"2025-09-11T23:26:00Z","modified":"2025-09-11T23:26:01Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:38:57.074217Z"}],"nvd":[{"id":"CVE-2025-10193","description":"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.","status":"published","published":"2025-09-11T14:15:40.207Z","modified":"2026-06-17T08:27:52.687Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:X/V:D/RE:L/U:Amber","level":"high","assessor":"secondary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:11:28.834562Z"}],"osv":[{"id":"CVE-2025-10193","title":"Neo4j Cypher MCP server is vulnerable to DNS rebinding attacks","description":"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.","status":"published","published":"2025-09-11T14:05:30.592Z","modified":"2026-10-28T02:30:48.445593446Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/AU:N/V:D/RE:L/U:Amber","level":"high"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:44:45.712478Z"},{"id":"GHSA-vcqx-v2mg-7chx","title":" Neo4j Cypher MCP server is vulnerable to DNS rebinding ","description":"### Impact\nDNS 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.\u0026nbsp;The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.\n\n### Patches\nCORS Middleware added to Cypher MCP server v0.4.0 that blocks all web-based access by default.\n\n### Workarounds\nIf you cannot upgrade to v0.4.0 and above, use stdio mode.\n\n### References\n[Vendor Advisory](https://neo4j.com/security/cve-2025-10193)\nhttps://www.cve.org/CVERecord?id=CVE-2025-10193 \n\nCredits\nWe 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/).","status":"published","published":"2025-09-11T23:26:00Z","modified":"2026-07-07T17:57:31.232871022Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:46:56.981655Z"},{"id":"PYSEC-2026-1620","title":" Neo4j Cypher MCP server is vulnerable to DNS rebinding ","description":"### Impact\nDNS 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.\u0026nbsp;The attack relies on the user being enticed to visit a malicious website and spend sufficient time there for DNS rebinding to succeed.\n\n### Patches\nCORS Middleware added to Cypher MCP server v0.4.0 that blocks all web-based access by default.\n\n### Workarounds\nIf you cannot upgrade to v0.4.0 and above, use stdio mode.\n\n### References\n[Vendor Advisory](https://neo4j.com/security/cve-2025-10193)\nhttps://www.cve.org/CVERecord?id=CVE-2025-10193 \n\nCredits\nWe 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/).","status":"published","published":"2026-07-07T16:03:04.888877Z","modified":"2026-07-07T17:47:03.417894824Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T15:52:55.06457Z"}]}}