CVE-2025-10193 Neo4j Cypher MCP server is vulnerable to DNS rebinding attacks
Attackers can bypass Same-Origin Policy via DNS rebinding to execute unauthorized tool invocations on local Neo4j MCP servers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-10193?
CVE-2025-10193 is a high-severity vulnerability in neo4j-cypher MCP server, published on 11 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-346
Which versions are affected by CVE-2025-10193?
3 open source packages ship an affected version, including mcp-neo4j-cypher.
| Package | Affected | Fixed in |
|---|---|---|
mcp-neo4j-cypher PyPI | From 0.2.2 | 0.4.0 |
mcp-neo4j-cypher PyPI | From 0.2.2 | 0.4.0 |
mcp-neo4j-cypher PyPI | From 0.2.2 | 0.4.0 |
How do I fix CVE-2025-10193?
Upgrade mcp-neo4j-cypher to 0.4.0 or later.
Is CVE-2025-10193 being exploited?
There is no known exploitation of CVE-2025-10193 in the wild and no public exploit code.
Sources
Also known as GHSA-vcqx-v2mg-7chx, PYSEC-2026-1620.