CVE-2026-35402 LOW

CVE-2026-35402: mcp-neo4j-cypher: SSRF and Data Modification via read_only Mode Bypass Through CALL Procedures

Vendor Neo4J-Contrib
Product mcp-neo4j
Weakness CWE-284
Published April 17, 2026
Last update April 20, 2026
View on NVD All CVEs

CVSS base score

2.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

mcp-neo4j-cypher is an MCP server for executing Cypher queries against Neo4j databases. In versions prior to 0.6.0, the read_only mode enforcement can be bypassed using APOC CALL procedures, potentially allowing unauthorized write operations or server-side request forgery. This issue is fixed in version 0.6.0.

Key dates

02Disclosure timeline

April 17, 2026 CVE published
April 20, 2026 Record updated