{"cve":"CVE-2021-22144","nvd":{"published":"2021-07-26T12:15:08.547","modified":"2026-06-17T03:36:41.670","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-674"],"references":["https://discuss.elastic.co/t/elasticsearch-7-13-3-and-6-8-17-security-update/278100","https://security.netapp.com/advisory/ntap-20210827-0006/","https://www.oracle.com/security-alerts/cpuapr2022.html","https://discuss.elastic.co/t/elasticsearch-7-13-3-and-6-8-17-security-update/278100","https://security.netapp.com/advisory/ntap-20210827-0006/"],"products":["elastic:elasticsearch","oracle:communications_cloud_native_core_automated_test_suite"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-22144","score":0.02442,"percentile":0.84319,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3393-hvrj-w7v3","url":"https://osv.dev/vulnerability/GHSA-3393-hvrj-w7v3","summary":"Denial of Service in Elasticsearch","modified":"2024-02-20T05:51:41.030295Z","packages":[{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","purl":"pkg:maven/org.elasticsearch/elasticsearch","ranges":["<6.8.17"],"fixed":["6.8.17"]},{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","purl":"pkg:maven/org.elasticsearch/elasticsearch","ranges":[">=7.0.0-alpha1 <7.13.3"],"fixed":["7.13.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}