CVE-2026-55615
CriticalCVSS 9.2Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
Langroid before version 0.65.5 has a vulnerability in the Neo4jChatAgent component that allows Cypher query injection. An attacker can influence the query via prompt injection, enabling reading or destroying all graph data, and with APOC or dbms.security procedures enabled, achieving OS command and filesystem access.
Risk Assessment
The risk for the organization includes complete loss of confidentiality and integrity of Neo4j data and potential server takeover, which can lead to escalation of attacks across the entire IT infrastructure.
Recommendation
Immediately update Langroid to version 0.65.5 or later, which contains a fix for the neo4j module. Additionally, consider restricting Neo4j database user privileges and disabling unnecessary APOC and dbms.security procedures.
Other vulnerabilities in Langroid
See all- CVE-2026-54769Critical
Langroid versions prior to 0.65.2 contain a critical sandbox escape vulnerability leading to Remote Code Execution (RCE) in its `TableChatAgent` and `VectorStore` components. When evaluating LLM-generated tool messages with `full_eval=True`, the `eval()` function fails to remove `__builtins__` from the globals dictionary, allowing access to system functions like `__import__('os').system()`. An attacker can exploit this by providing a crafted prompt to achieve unauthenticated RCE on the host.
- CVE-2026-54760Critical
In Langroid framework prior to version 0.65.1, a SQL injection vulnerability was found in the `SQLChatAgent` component. Despite default dangerous operations being disabled, the protection mechanism using a regex blocklist and SELECT allowlist can be bypassed with crafted PostgreSQL queries, enabling server file reads.
- CVE-2026-25879Critical
Langroid SQLChatAgent before version 0.63.0 executes SQL generated by an LLM, which is influenceable by prompt injection. An attacker can coerce execution of dangerous operations like COPY ... FROM PROGRAM, leading to remote code execution on the database host.
- CVE-2026-54771High
A vulnerability in Langroid framework prior to version 0.65.3 allows untrusted users to directly invoke tools via raw JSON payloads, even when tools are registered with `use=False, handle=True`.
- CVE-2026-50181High
In the Langroid framework, the ReadFileTool and WriteFileTool do not validate that the file path stays within the working directory (curr_dir). This allows an attacker to read and write files outside the allowed directory using path traversal sequences like ../.
- CVE-2026-50180High
In Langroid library prior to version 0.64.0, the SQLChatAgent component has an imperfect _validate_query defense layer that fails to block all dangerous SQL primitives. The blocklist misses PostgreSQL file-reading functions (pg_read_file, pg_stat_file) and SQL Server/SQLite constructs, allowing an attacker to read files from the database host.
Original NVD description (English source)
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.