CVE-2021-37939

Severity: low (CVSS 2.7 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: 2021-11-18 · updated 2026-06-17
Weakness: CWE-200

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.

Affected products

Kibana: from 7.8.0 before 7.15.2 — fixed in 7.15.2

How to fix

Upgrade to a fixed version: Kibana 7.15.2. Check the vendor advisory for mitigations.

References

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

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