{"id":"CVE-2026-18428","aliases":["GHSA-g4jr-343c-fvjm"],"url":"https://o3.security/vulnerability/CVE-2026-18428","summary":"SQL Query Validation Bypass in OpenSearch Direct Query","details":"A SQL query validation bypass in the Flint extension query handler in the OpenSearch SQL plugin allows a remote authenticated actor with async query access to execute arbitrary code on Apache Spark workers by sending a crafted SQL query to the direct query endpoint.","published":"2026-08-13T17:32:48.455Z","modified":"2026-08-14T04:04:06.323744319Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://aws.amazon.com/security/security-bulletins/2026-081-aws/"},{"type":"FIX","url":"https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18428.json"},{"type":"ADVISORY","url":"https://github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18428"},{"type":"FIX","url":"https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-2-19-6"},{"type":"FIX","url":"https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-3-7-0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-14T04:04:06.323744319Z"}}