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Flowise - Cypher Injection in GraphCypherQAChain

High

Synopsis

The GraphCypherQAChain node forwards user-provided input directly into the Cypher query execution pipeline without proper sanitization. An attacker can inject arbitrary Cypher commands that are executed on the underlying Neo4j database, enabling data exfiltration, modification, or deletion.

Solution

Upgrade to Flowise version 3.1.0 or later

Disclosure Timeline

Jan 19, 2026 : Initial contact - Report submitted via GitHub
Jan 27, 2026 : Second attempt
Feb 04, 2026 : Third attempt
Feb 25, 2026 : Vendor indicate that a fix would be included in the next release
Apr 07, 2026 : Ask if the fix has been released
Apr 07, 2026 : Vendor indicate it has been fixed in Flowise 3.1.0

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