{"id":"CVE-2026-35402","summary":"mcp-neo4j-cypher: SSRF and Data Modification via read_only Mode Bypass Through CALL Procedures","details":"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.","aliases":["GHSA-x3cv-r3g3-fpg9","PYSEC-2026-2626"],"modified":"2026-08-07T11:31:32.200839074Z","published":"2026-04-17T20:34:06.510Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-284"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35402.json"},"references":[{"type":"WEB","url":"https://github.com/neo4j-contrib/mcp-neo4j/releases/tag/mcp-neo4j-cypher-v0.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35402.json"},{"type":"ADVISORY","url":"https://github.com/neo4j-contrib/mcp-neo4j/security/advisories/GHSA-x3cv-r3g3-fpg9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35402"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/neo4j-contrib/mcp-neo4j","events":[{"introduced":"0"},{"fixed":"fbf47061c5498d9c9af7f5530a87841cfb64d294"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"0.6.0"}]}}],"versions":["mcp-neo4j-cypher-v0.5.0","mcp-neo4j-data-modeling-v0.5.1","mcp-neo4j-aura-manager-v0.4.3","mcp-neo4j-memory-v0.4.1","mcp-neo4j-cypher-v0.4.1","mcp-neo4j-data-modeling-v0.5.0","mcp-neo4j-aura-manager-v0.4.2","mcp-neo4j-aura-manager-v0.4.1","mcp-neo4j-aura-manager-v0.4.0","mcp-neo4j-memory-v0.4.0","mcp-neo4j-cypher-v0.4.0","mcp-neo4j-data-modeling-v0.4.0","mcp-neo4j-memory-v0.3.0","mcp-neo4j-cypher-v0.3.1","mcp-neo4j-data-modeling-v0.3.0","mcp-neo4j-aura-manager-v0.3.0","mcp-neo4j-data-modeling-v0.2.0","mcp-neo4j-memory-v0.2.0","mcp-neo4j-cypher-v0.3.0","mcp-neo4j-memory-v0.1.5","mcp-neo4j-cypher-v0.2.4-dxt","mcp-neo4j-cypher-v0.2.4","mcp-neo4j-data-modeling-v0.1.1","mcp-neo4j-data-modeling-v0.1.0","mcp-neo4j-cypher-v0.2.3","mcp-neo4j-cypher-v0.2.2","mcp-neo4j-memory-v0.1.3","mcp-neo4j-memory-v0.1.2","mcp-neo4j-aura-manager-v0.2.2","mcp-neo4j-aura-manager-v.0.2.1","mcp-neo4j-cypher-v0.2.1","mcp-neo4j-cypher-v0.2.0","mcp-neo4j-aura-manager-v.0.2.0","mcp-neo4j-aura-manager-v.0.1.0","mcp-neo4j-memory-v.0.1.1","mcp-neo4j-cypher-v.0.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35402.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"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"}]}