CVE-2026-18428
SQL Query Validation Bypass in OpenSearch Direct Query
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Reserved
- Jul 30, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | AMZN |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | AMZN |
Weaknesses
- CWE-693 Protection Mechanism Failure
Affected Products
| Product | Versions |
|---|---|
OpensearchAWS |
|
OpensearchGithub |
|
References
- https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-3-7-0patch
- https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-2-19-6patch
- https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.htmlpatchrelease-notes
- https://github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjmrelease-notesvendor-advisory
- https://aws.amazon.com/security/security-bulletins/2026-081-aws/vendor-advisory
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