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CVE details

CVE-2026-42399

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.

Score
6.5 medium
Published
2026-05-28
Links
NVD · cve.org · Report wrong data

Matched ports (2)

PortPackageVersionStatusMaintainer
textproc/kibana91kibana919.1.10unaddressedelastic@FreeBSD.org
textproc/kibana92kibana929.2.8unaddressedelastic@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>kibana91</name>
	<range><lt>8.19.16</lt></range>
      </package>
      <package>
	<name>kibana92</name>
	<range><lt>8.19.16</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to
	denial of service via Excessive Allocation (CAPEC-130). An
	authenticated low-privileged user can cause Kibana to consume
	exponentially increasing amounts of memory by submitting a specially
	crafted Timelion visualization expression containing deeply chained
	function calls. The resulting data structure grows without bound,
	exhausting available memory and causing the Kibana service to crash
	and become unavailable to all users.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-42399</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-42399</url>
    </references>
    <dates>
      <discovery>2026-05-28</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>