What is CVE-2021-37936?

CVE-2021-37936 is a medium-severity vulnerability in Elastic Kibana, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-11-18.

How severe is CVE-2021-37936?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Elastic Kibana

CVE-2021-37936

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (37.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Elastic Kibana — versions versions before 7.14.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@elastic.co (Mitigation, Vendor Advisory)
security@elastic.co (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2021-37936?: CVE-2021-37936 is a medium-severity vulnerability in Elastic Kibana, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-11-18.
How severe is CVE-2021-37936?: Medium severity. CVSS v3 base score is 5.4 out of 10.