{"id":"CVE-2025-9624","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-9624","generatedAt":"2026-10-28T09:26:55.335Z","title":"A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs.","description":"A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs.\n\n\n\nThis issue affects all OpenSearch versions between 3.0.0 and < 3.3.0 and OpenSearch < 2.19.4.","published":"2025-11-25T20:16:01.000Z","lastModified":"2026-10-18T20:10:00.000Z","status":"Modified","sourceIdentifier":"help@fluidattacks.com","cvss":{"version":"4.0","score":8.3,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-674"],"affected":["amazon/opensearch"],"epss":{"score":0.00727,"percentile":0.53947,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://fluidattacks.com/advisories/chick","tags":["Exploit","Third Party Advisory"],"source":"help@fluidattacks.com"},{"url":"https://github.com/opensearch-project/OpenSearch/releases/tag/2.19.4","source":"help@fluidattacks.com"},{"url":"https://github.com/opensearch-project/OpenSearch/releases/tag/3.3.0","source":"help@fluidattacks.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-9624","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}