CVE-2026-18428
highpriority · track · 0EPSS 0.010 · 62 %ileEUEPSS · scored 2026-10-23
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.3–8.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://aws.amazon.com/security/security-bulletins/2026-081-aws/enisa_euvd
- https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.htmlenisa_euvd
- https://github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjmenisa_euvd
- https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-2-19-6enisa_euvd
- https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-3-7-0enisa_euvd
- https://aws.amazon.com/security/security-bulletins/2026-081-aws/nvd
- https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.htmlnvd
- https://github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjmnvd
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