Neo4jVectorFilterExpressionConverter Cypher Injection in SpringAI Neo4j Store <1.0.5 & <1.1.4
CVE-2026-22743 Published on March 27, 2026
Server-Side Request Forgery via Filter Expression Keys in Neo4jVectorStore
Spring AI's spring-ai-neo4j-store contains a Cypher injection vulnerability in Neo4jVectorFilterExpressionConverter. When a user-controlled string is passed as a filter expression key in Neo4jVectorFilterExpressionConverter of spring-ai-neo4j-store, doKey() embeds the key into a backtick-delimited Cypher property accessor (node.`metadata.`) after stripping only double quotes, without escaping embedded backticks.This issue affects Spring AI: from 1.0.0 before 1.0.5, from 1.1.0 before 1.1.4.
Vulnerability Analysis
CVE-2026-22743 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a SQL Injection Vulnerability?
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.
CVE-2026-22743 has been classified to as a SQL Injection vulnerability or weakness.
Products Associated with CVE-2026-22743
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Affected Versions
Spring AI:- Version 1.0.0 and below 1.0.5 is affected.
- Version 1.1.0 and below 1.1.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.