CVE-2026-1337
Neo4j Enterprise and Community editions have insufficient escaping of unicode characters in query log
EPSS 0.01%
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
How to fix CVE-2026-1337
To remediate CVE-2026-1337, upgrade the affected package to a fixed version below.
- —upgrade to 2026.1.0 or later
- —upgrade to 2026.01 or later
Is CVE-2026-1337 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2026.1.0
- from 0, < 2026.01
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |