{"id":"CVE-2026-35402","aliases":["GHSA-x3cv-r3g3-fpg9","PYSEC-2026-2626"],"url":"https://o3.security/vulnerability/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.","published":"2026-04-17T20:34:06.510Z","modified":"2026-08-12T03:51:24.737398008Z","cvss":null,"epss":{"score":0.00264,"percentile":0.18195,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"mcp-neo4j-cypher","fixedVersion":"0.6.0"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:24.737398008Z"}}