CVE-2026-22743: Server-Side Request Forgery via Filter Expression Keys in Neo4jVectorStore

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-27 · updated 2026-10-26
Weakness: CWE-89

Description

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.

Affected products

Spring AI: from 1.0.0 before 1.0.5; from 1.1.0 before 1.1.4 — fixed in 1.0.5, 1.1.4
Spring AI: from 1.0.0 before 1.0.5; from 1.1.0 before 1.1.4 — fixed in 1.0.5, 1.1.4

How to fix

Upgrade to a fixed version: Spring AI 1.0.5, 1.1.4; Spring AI 1.0.5, 1.1.4. Check the vendor advisory for mitigations.

References

https://spring.io/security/cve-2026-22743

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