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Vulnerability record · CVE-2018-18389 · published 16 October 2018

CVE-2018-18389: Neo4j improper authentication vulnerability

Neo4j · Neo4j

Due to incorrect access control in Neo4j Enterprise Database Server 3.4.x before 3.4.9, the setting of LDAP for authentication with STARTTLS, and System Account for authorization, allows an attacker to log into the server by sending any valid username with an arbitrary password.

9.8 CVSS 3.0 Critical EPSS 1.9% · top 20.9% CWE-287 · Improper authentication
9.8CVSS 3.0 base score, v2 7.5
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Due to incorrect access control in Neo4j Enterprise Database Server 3.4.x before 3.4.9, the setting of LDAP for authentication with STARTTLS, and System Account for authorization, allows an attacker to log into the server by sending any valid username with an arbitrary password.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/neo4j/neo4j/issues/12047 ExploitThird Party Advisory
https://github.com/neo4j/neo4j/issues/12047 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-18389), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.