Low severityNVD Advisory· Published Apr 17, 2026· Updated Apr 29, 2026

CVE-2026-35402

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
mcp-neo4j-cypherPyPI	< 0.6.0	0.6.0

Affected products

Neo4j Contrib/Mcp Neo4jreferences
ghsa-coords
pkg:pypi/mcp-neo4j-cypher
Range: < 0.6.0

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-x3cv-r3g3-fpg9ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-35402ghsaADVISORY
github.com/neo4j-contrib/mcp-neo4j/releases/tag/mcp-neo4j-cypher-v0.6.0nvdWEB
github.com/neo4j-contrib/mcp-neo4j/security/advisories/GHSA-x3cv-r3g3-fpg9nvdWEB

News mentions

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