CVE-2026-1337— Insufficient escaping of unicode characters in query log
Quick assessment
Affected
neo4j Enterprise Edition
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Neo4j是美国Neo4j公司的一款基于Java的且完全兼容ACID的图形数据库，它支持数据迁移、附加组件等。 Neo4j Enterprise和Neo4j Community 2026.01之前版本存在安全漏洞，该漏洞源于查询日志中Unicode字符转义不足，如果用户在将日志视为HTML的工具中打开日志，可能导致跨站脚本。
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I. Basic Information for CVE-2026-1337
Vulnerability Information
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Vulnerability Title
Insufficient escaping of unicode characters in query log
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
日志输出的转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Neo4j 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Neo4j是美国Neo4j公司的一款基于Java的且完全兼容ACID的图形数据库，它支持数据迁移、附加组件等。 Neo4j Enterprise和Neo4j Community 2026.01之前版本存在安全漏洞，该漏洞源于查询日志中Unicode字符转义不足，如果用户在将日志视为HTML的工具中打开日志，可能导致跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| neo4j | Enterprise Edition | 0 ~ 2026.01.0 | - |
|
| neo4j | Community Edition | 0 ~ 2026.01.0 | - |
|
II. Public POCs for CVE-2026-1337
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2026-1337 - Neo4j - Log Injection | https://github.com/JoakimBulow/CVE-2026-1337 | POC Details |
AI-Generated POC
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Proof of Concept for CVE-2026-1337 (1)
IV. Related Vulnerabilities
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Same weakness: CWE-117
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V. Comments for CVE-2026-1337
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