Monitor vulnerabilities like this one.
Sign up free to get alerted when software you use is affected.
9.9
CVE-2026-55615: Neo4jChatAgent allows hackers to access or destroy database data
GHSA-2pq5-3q89-j7cc
CVE-2026-55615
GHSA-2pq5-3q89-j7cc
CVE-2026-55615
CVE-2026-55615
Summary
A vulnerability in Neo4jChatAgent allows hackers to read or delete all data in a Neo4j database, or even execute system commands on the server, by manipulating the input to the database. This can happen if an attacker can influence the input to the Neo4jChatAgent. To protect your database, update Neo4jChatAgent to the latest version and ensure that only trusted users can interact with it.
What to do
- Update langroid to version 0.65.5.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| pip | – | langroid |
<= 0.65.4 Fix: upgrade to 0.65.5
|
| PyPI | – | langroid |
< 0.65.5 Fix: upgrade to 0.65.5
|
| – | langroid | langroid | < 0.65.5 |
Original title
Langroid: Neo4jChatAgent executes LLM-generated Cypher without validation (prompt-to-Cypher injection; config-conditional RCE), mirroring the SQLChatAgent bug fixed in CVE-2026-25879
Original description
Langroid is a framework for building large-language-model-powered applications. Prior to version 0.65.5, Neo4jChatAgent passes LLM-generated Cypher queries straight to the Neo4j driver with no validation, no statement-type allowlist, and no opt-out gate. The query text is influenceable by prompt injection (direct user input or indirect content the agent reads back via RAG), so an attacker who can influence the prompt can read or destroy all graph data and, when APOC or dbms.security procedures are enabled on the server, achieve OS-command and filesystem access. This is the same defect class and threat model as the SQLChatAgent prompt-to-SQL-to-RCE issue fixed in version 0.63.0 (CVE-2026-25879); that fix did not extend to the neo4j module. Version 0.65.5 contains a fix for the neo4j module.
ghsa CVSS4.0
9.2
Vulnerability type
CWE-74
Injection
- https://github.com/advisories/GHSA-2pq5-3q89-j7cc
- https://github.com/langroid/langroid/security/advisories/GHSA-2pq5-3q89-j7cc
- https://github.com/langroid/langroid Product
- https://github.com/langroid/langroid/commit/5a3097d9dd6378b08ced5480b0caf76cc58d... x_refsource_MISC
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55615... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-55615 Vendor Advisory
Published: 9 Jul 2026 · Updated: 20 Jul 2026 · First seen: 6 Jul 2026