CVE-2021-37936

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-18 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

Kibana: before 7.14.1 — fixed in 7.14.1

How to fix

Upgrade to a fixed version: Kibana 7.14.1. Check the vendor advisory for mitigations.

References

https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077
https://www.elastic.co/community/security/
https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077
https://www.elastic.co/community/security/

Get alerted when CVE-2021-37936 or the next vulnerability affects your stack