vulnerability

Elastic Kibana: CVE-2021-37936: Improper Neutralization of Input During Web Page Generation

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Severity

CVSS

(AV:N/AC:M/Au:S/C:P/I:P/A:N)

Published

Nov 18, 2022

Added

Sep 3, 2025

Modified

Mar 25, 2026

Description

It was discovered that Kibana was not sanitizing document fields containing HTML snippets. Using this vulnerability, an attacker with the ability to write documents to an elasticsearch index could inject HTML. When the Discover app highlighted a search term containing the HTML, it would be rendered for the user.

Solution

elastic-kibana-upgrade-latest

References

CWE-79
CVE-2021-37936
https://attackerkb.com/topics/CVE-2021-37936
https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077
https://www.elastic.co/community/security/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-24412

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