Vulnerability · Published Feb 6, 2026 · Assigned by Neo4j
CVE-2026-1337Insufficient escaping of unicode characters in query log
Low 1.1
In plain English
A low-severity security flaw in Community Edition from neo4j. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official 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
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.neo4j:neo4j | 2026.01 | GHSA-xr72-g735-4vwp |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| neo4j | Enterprise Edition | 0 – before 2026.01.0 |
| neo4j | Community Edition | 0 – before 2026.01.0 |
Weakness: CWE-117 · Vector: 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