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CVE details

CVE-2026-1337

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

Score
1.1 low
Published
2026-02-06
Links
NVD · cve.org

Affected ports (1)

PortPackageVersionStatusMaintainer
databases/neo4jneo4j4.4.48unaddressedotis@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>neo4j</name>
	<range><lt>2026.01.0</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-1337</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-1337</url>
    </references>
    <dates>
      <discovery>2026-02-06</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>