Insufficient escaping of unicode characters in query log
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| neo4j | Enterprise Edition | before 2026.01.0 | 2026.01.0 | Patch available | CNA |
| neo4j | Community Edition | before 2026.01.0 | 2026.01.0 | Patch available | CNA |
| — | org.neo4j:neo4j (Maven) | before 2026.01 | 2026.01 | Patch available | GHSA-xr72-g735-4vwp |
Remediation
- Fix · CNA Enterprise Edition (neo4j) Fixed in 2026.01.0
- Fix · CNA Community Edition (neo4j) Fixed in 2026.01.0
- Fix · GHSA-xr72-g735-4vwp org.neo4j:neo4j (Maven) Fixed in 2026.01 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1337
- 2026-10-03 Alias added: GHSA-xr72-g735-4vwp
References
More Neo4j vulnerabilities
- TI-2021-13406 Neo4j through 3.4.18 (with the shell server enabled) exposes an RMI service that… CVSS 3.1CRITICAL 9.8
- TI-2018-13005 Due to incorrect access control in Neo4j Enterprise Database Server 3.4.x before 3.4.9… CVSS 3.0CRITICAL 9.8
- TI-2013-05927 Multiple cross-site request forgery (CSRF) vulnerabilities in Neo4J 1.9.2 allow remote… CVSS 2.0MEDIUM 6.8
- TI-2026-12296 Unathenticated connection can hold Bolt channel open CVSS 4.0MEDIUM 5.5
- TI-2024-22827 Improper privilege management in Neo4j CVSS 3.1MEDIUM 6.5
- TI-2026-01192 Incorrect privilege assignment in composite databases CVSS 4.0LOW 2.0
Sources
- CVE-2026-1337 · CVE Program
- CVE-2026-1337 · NVD
- FIRST EPSS
- GHSA-xr72-g735-4vwp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences