Vulnerability-Lookup

CVE-2026-18428 (GCVE-0-2026-18428)

Vulnerability from cvelistv5 – Published: 2026-08-13 17:32 – Updated: 2026-08-13 17:57

Title

SQL Query Validation Bypass in OpenSearch Direct Query

Summary

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.

Severity

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

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 17:57 UTC

CWE

CWE-693 - Protection Mechanism Failure

Assigner

AMZN

References

5 references

URL	Tags
https://opensearch.org/artifacts/by-version/?_gl=…	patch
https://opensearch.org/artifacts/by-version/?_gl=…	patch
https://docs.aws.amazon.com/opensearch-service/la…	patchrelease-notes
https://github.com/opensearch-project/sql/securit…	release-notesvendor-advisory
https://aws.amazon.com/security/security-bulletin…	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
AWS	Opensearch	Affected: 2.13 , ≤ 3.5 (custom)
Github	Opensearch	Affected: 2.13 , ≤ 3.6 (custom)

Show details on NVD website

JSON

To clipboard

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}

GHSA-3RVX-FCJ6-WR45

Vulnerability from github – Published: 2026-08-13 18:31 – Updated: 2026-08-13 18:31

Details

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-18428"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-693"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-13T18:17:21Z",
    "severity": "HIGH"
  },
  "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.",
  "id": "GHSA-3rvx-fcj6-wr45",
  "modified": "2026-08-13T18:31:41Z",
  "published": "2026-08-13T18:31:41Z",
  "references": [
    {
      "type": "WEB",
      "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": "WEB",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-081-aws"
    },
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      "type": "WEB",
      "url": "https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html"
    },
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      "type": "WEB",
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    },
    {
      "type": "WEB",
      "url": "https://opensearch.org/artifacts/by-version/?_gl=1*d14pqp*_up*MQ..*_ga*Nzc5NTAxNzM2LjE3ODM1NTA2NDA.*_ga_BQV14XK08F*czE3ODM1NTA2NDAkbzEkZzEkdDE3ODM1NTA3MTQkajU2JGwwJGg3NTc4ODY0OTM.#release-3-7-0"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-18428 (GCVE-0-2026-18428)

GHSA-3RVX-FCJ6-WR45

Tags

Sightings

Nomenclature