{"id":"BIT-elasticsearch-2026-72685","summary":"Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service","details":"A flaw in Elasticsearch allows a low-privileged authenticated user who can index documents to submit a single small document containing a crafted user-supplied input. Processing one such document occupies a worker thread from a bounded pool for a disproportionate amount of time, degrading the availability of indexing operations on the affected node.","aliases":["CVE-2026-72685"],"modified":"2026-09-08T08:47:14.693175181Z","published":"2026-08-19T08:39:49.426Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*","cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:maven:*:*"]},"references":[{"type":"ADVISORY","url":"https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-77/389500"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72685"}],"affected":[{"package":{"name":"elasticsearch","ecosystem":"Bitnami","purl":"pkg:bitnami/elasticsearch"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.19.20"},{"introduced":"9.0.0"},{"fixed":"9.4.5"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/elasticsearch/BIT-elasticsearch-2026-72685.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}],"schema_version":"1.9.0"}