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High

Cypher Injection in Spring AI Neo4jVectorFilterExpressionConverter

IdentifiersCVE-2026-22743CWE-74

CVE-2026-22743 is a Cypher injection vulnerability in Spring AI's spring-ai-neo4j-store component, specifically in Neo4jVectorFilterExpressionConverter. When a user-controlled string is supplied as a filter expression key, the doKey() method embeds that key into a backtick-delimited Cypher property accessor after stripping only double quotes. Because embedded backticks are not escaped, an attacker can break out of the intended property identifier context and inject arbitrary Cypher syntax into the generated query. The issue affects Spring AI versions from 1.0.0 before 1.0.5 and from 1.1.0 before 1.1.4.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker to manipulate Cypher queries generated by the application for Neo4j-backed vector store operations. Depending on how the vulnerable query path is exposed and what privileges the Neo4j connection has, this can result in unauthorized query modification, access to data beyond the intended scope, and potentially other unintended database interactions. The provided content does not establish remote code execution; the demonstrated impact is query injection and unauthorized query manipulation against Neo4j-backed functionality.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, prevent untrusted input from reaching filter expression keys used by Neo4jVectorFilterExpressionConverter. Enforce strict allowlisting of permitted metadata/filter keys, reject or sanitize keys containing Cypher metacharacters including backticks, and avoid constructing dynamic filter keys from user input. Limit the Neo4j account used by the application to the minimum required privileges to reduce blast radius if query injection occurs.

Remediation

Patch, then assume compromise.

Upgrade org.springframework.ai:spring-ai-neo4j-store to a fixed release: 1.0.5 or later on the 1.0.x branch, or 1.1.4 or later on the 1.1.x branch. Ensure all deployed applications using Neo4jVectorStore inherit the patched dependency version and rebuild/redeploy affected services.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
BroadcomSpring Aiapplication
BroadcomSpring Ai Neo4j Storeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

8 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity6

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-22743
NVD
nvd.nist.gov/vuln/detail/CVE-2026-22743
MITRE CWE · CWE-74
cwe.mitre.org
Vendor Advisory
spring.io/security/cve-2026-22743