CVE-2021-37939

Name: CVE-2021-37939
Creator: NVD / NIST
Published: 2021-11-18T16:15:08.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.7/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2021-37939 is a low-severity vulnerability rated 2.7/10 on the CVSS scale. It was discovered that Kibana’s JIRA connector & IBM Resilient connector could be used to return HTTP response data on internal hosts, which may be intentionally hidden from public view. Using this vulnerability, a malicious user with the ability to create connectors, could utilize these connectors to view limited HTTP response data on hosts accessible to the cluster.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

It was discovered that Kibana’s JIRA connector & IBM Resilient connector could be used to return HTTP response data on internal hosts, which may be intentionally hidden from public view. Using this vulnerability, a malicious user with the ability to create connectors, could utilize these connectors to view limited HTTP response data on hosts accessible to the cluster.

Metrics

CVSS 3.1

2.7/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.44%

35.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Elastic	Kibana	>= 7.8.0, < 7.15.2

References

https://discuss.elastic.co/t/kibana-7-15-2-security-update/288923Vendor Advisory
https://discuss.elastic.co/t/kibana-7-15-2-security-update/288923Vendor Advisory

Timeline

Published: Nov 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37939?

How severe is CVE-2021-37939?

CVE-2021-37939 has a CVSS score of 2.7/10 (LOW severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37939?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37939?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST