VULNERABILITY INTELLIGENCE
CVE-2021-22144
CVSS score6.5 MEDIUM
EPSS probability2.44%
CISA KEVNot currently listed
Published2021-07-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
In Elasticsearch versions before 7.13.3 and 6.8.17 an uncontrolled recursion vulnerability that could lead to a denial of service attack was identified in the Elasticsearch Grok parser. A user with the ability to submit arbitrary queries to Elasticsearch could create a malicious Grok query that will crash the Elasticsearch node.
Weakness classification
- nvd@nist.gov: CWE-674
Primary references
- security@elastic.co — Release Notes, Vendor Advisory
- security@elastic.co — Third Party Advisory
- security@elastic.co — Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory