{"cve":"CVE-2023-31418","nvd":{"published":"2023-10-26T18:15:08.587","modified":"2026-06-17T05:56:54.440","status":"Modified","description":"An issue has been identified with how Elasticsearch handled incoming requests on the HTTP layer. An unauthenticated user could force an Elasticsearch node to exit with an OutOfMemory error by sending a moderate number of malformed HTTP requests. The issue was identified by Elastic Engineering and we have no indication that the issue is known or that it is being exploited in the wild.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://discuss.elastic.co/t/elasticsearch-8-9-0-7-17-13-security-update/343616","https://security.netapp.com/advisory/ntap-20231130-0005/","https://www.elastic.co/community/security","https://discuss.elastic.co/t/elasticsearch-8-9-0-7-17-13-security-update/343616","https://security.netapp.com/advisory/ntap-20231130-0005/"],"products":["elastic:elastic_cloud_enterprise","elastic:elasticsearch"],"source":"nvd","synced_at":"2026-10-19T21:40:11.519948003+00:00"},"epss":{"cve":"CVE-2023-31418","score":0.0205,"percentile":0.81244,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2cqf-6xv9-f22w","url":"https://osv.dev/vulnerability/GHSA-2cqf-6xv9-f22w","summary":"Elasticsearch vulnerable to Uncontrolled Resource Consumption","modified":"2026-09-10T03:50:03.480118825Z","packages":[{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","purl":"pkg:maven/org.elasticsearch/elasticsearch","ranges":["<7.17.13"],"fixed":["7.17.13"]},{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","purl":"pkg:maven/org.elasticsearch/elasticsearch","ranges":[">=8.0.0 <8.9.0"],"fixed":["8.9.0"]}]}],"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."]}