Vulnerability DatabaseCVE-2026-18428
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CVE-2026-18428
Published:August 13, 2026
Updated:September 01, 2026
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.
Affected Packages
https://github.com/opensearch-project/sql.git (GITHUB):
Affected version(s) >=2.13.0.0 <2.19.6.0
Fix Suggestion:
Update to version 2.19.6.0
https://github.com/opensearch-project/sql.git (GITHUB):
Affected version(s) >=3.0.0.0 <3.7.0.0
Fix Suggestion:
Update to version 3.7.0.0
Related Resources (7)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18428.json
https://github.com/opensearch-project/sql/security/advisories/GHSA-g4jr-343c-fvjm
https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html
https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-3-7-0
https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-2-19-6
https://aws.amazon.com/security/security-bulletins/2026-081-aws/
https://nvd.nist.gov/vuln/detail/CVE-2026-18428
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Protection Mechanism Failure
CWE-693
EPSS
Base Score:
0.69