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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Elastic Kibana — versions versions before 7.14.1
Weakness classification (CWE)
References
- www.elastic.co/community/security/ (Mitigation, Vendor Advisory)
- discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077 (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.