CVE-2021-37938

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% 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-269

Description

It was discovered that on Windows operating systems specifically, Kibana was not validating a user supplied path, which would load .pbf files. Because of this, a malicious user could arbitrarily traverse the Kibana host to load internal files ending in the .pbf extension. Thanks to Dominic Couture for finding this vulnerability.

Affected products

Kibana: from 7.9.0 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

Get alerted when CVE-2021-37938 or the next vulnerability affects your stack