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neo4j/neo4j · Security

Neo4j Enterprise and Community editions have insufficient escaping of unicode characters in query log

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GHSA ID
GHSA-xr72-g735-4vwp
CVE ID
CVE-2026-1337
Severity
low
Published
Updated
CVSS v4
1.1 · 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

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

CWEs

  • CWE-117 · Improper Output Neutralization for Logs

References