CVE-2026-1337

Insufficient escaping of unicode characters in query log in Neo4j Enterprise and Community editions prior to 2026.01 can lead to XSS if the user opens the logs in a tool that treats them as HTML. There is no security impact on Neo4j products, but this advisory is released as a precaution to treat the logs as plain text if using versions prior to 2026.01. Proof of concept exploit: https://github.com/JoakimBulow/CVE-2026-1337

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/JoakimBulow/CVE-2026-1337	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:neo4j:neo4j:::::community:::*
	cpe:2.3:a:neo4j:neo4j:::::enterprise:::*

History

24 Feb 2026, 21:21

Type	Values Removed	Values Added
First Time		Neo4j neo4j Neo4j
CPE		cpe:2.3:a:neo4j:neo4j:::::enterprise:::* cpe:2.3:a:neo4j:neo4j:::::community:::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
References	~~() https://github.com/JoakimBulow/CVE-2026-1337 -~~	() https://github.com/JoakimBulow/CVE-2026-1337 - Exploit, Third Party Advisory

06 Feb 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-06 14:16

Updated : 2026-02-24 21:21

NVD link : CVE-2026-1337

Mitre link : CVE-2026-1337

CVE.ORG link : CVE-2026-1337

JSON object : View

Products Affected

neo4j

neo4j

CWE

CWE-117

Improper Output Neutralization for Logs

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