CVE-2026-18428

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 v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-081-aws/
https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html
https://github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjm
https://opensearch.org/artifacts/by-version/?_gl=1d14pqp_upMQ.._gaNzc5NTAxNzM2LjE3ODM1NTA2NDA._ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-2-19-6
https://opensearch.org/artifacts/by-version/?_gl=1d14pqp_upMQ.._gaNzc5NTAxNzM2LjE3ODM1NTA2NDA._ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-3-7-0

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-13 18:17

Updated : 2026-08-14 19:04

NVD link : CVE-2026-18428

Mitre link : CVE-2026-18428

CVE.ORG link : CVE-2026-18428

JSON object : View

Products Affected

No product.

CWE

CWE-693

Protection Mechanism Failure

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