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.
{
"github_reviewed": true,
"cwe_ids": [
"CWE-89",
"CWE-943"
],
"nvd_published_at": "2026-03-27T06:16:37Z",
"github_reviewed_at": "2026-03-29T15:35:08Z",
"severity": "HIGH"
}