{"id":"CVE-2026-72685","aliases":["BIT-elasticsearch-2026-72685","EUVD-2026-58249","GHSA-5mjq-6xvh-rmv2"],"status":"published","title":"Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service","description":"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.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00367,"percentile":0.30956,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-407"],"published":"2026-08-13T19:10:56Z","modified":"2026-10-28T11:22:56Z","fixes":[{"ecosystem":"Bitnami","package":"elasticsearch","fixed_in":["8.19.20","9.4.5"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"elasticsearch","ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.19.20"},{"introduced":"9.0.0"},{"fixed":"9.4.5"}]}]}],"products":[{"vendor":"elastic","product":"elasticsearch"}],"references":[{"url":"https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-security-update-esa-2026-77/389500","tags":["Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72685","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-5mjq-6xvh-rmv2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72685.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-72685","title":"Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service","description":"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.","status":"published","published":"2026-08-13T19:10:56.14Z","modified":"2026-08-13T20:34:58.606Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:19:52.016971Z"}],"euvd":[{"id":"EUVD-2026-58249","description":"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. 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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.","status":"published","published":"2026-08-13T21:36:11Z","modified":"2026-08-13T21:36:20Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T15:10:27.325913Z"}],"nvd":[{"id":"CVE-2026-72685","description":"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.","status":"published","published":"2026-08-13T20:17:29.217Z","modified":"2026-09-01T15:04:10.183Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T14:12:37.557758Z"}],"osv":[{"id":"CVE-2026-72685","title":"Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service","description":"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.","status":"published","published":"2026-08-13T19:10:56.14Z","modified":"2026-10-28T11:22:56.012488048Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-407"],"updated_at":"2026-11-02T15:45:15.88521Z"},{"id":"BIT-elasticsearch-2026-72685","title":"Inefficient Algorithmic Complexity in Elasticsearch Leading to Denial of Service","description":"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.","status":"published","published":"2026-08-19T08:39:49.426Z","modified":"2026-09-08T08:47:14.693175181Z","updated_at":"2026-11-02T15:28:29.563843Z"}]}}