Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination
Priority MEDIUM 42CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
Unrestricted deserialization of untrusted data in the cursor pagination component in the OpenSearch SQL plugin allows a remote authenticated user with basic read/search permissions to execute arbitrary code on the server by sending a crafted cursor parameter to the plugins/sql endpoint.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00962 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenSearch | OpenSearch | 2.8 – 3.6 | — | No fix listed | CNA |
| AWS | Amazon OpenSearch Service | 2.9 – 3.5 | — | No fix listed | CNA |
- OpenSearch VendorOpenSearch Affected 2.8 – 3.6 Fixed in — No fix listed CNA
- Amazon OpenSearch Service VendorAWS Affected 2.9 – 3.5 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-83497
- 2026-10-03 Alias added: GHSA-rj55-cp95-h7f6
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More OpenSearch vulnerabilities
- TI-2025-08817 OpenSearch 3.2.0 - Nested Boolean/Disjunction asymmetric DoS CVSS 4.0HIGH 8.3
- TI-2026-53130 Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards CVSS 4.0HIGH 8.7
- TI-2026-15136 RCE via Prototype Pollution in OpenSearch Dashboards CVSS 4.0HIGH 8.7
- TI-2026-58381 Stored Cross-Site Scripting via Vega Expression Function Bypass in OpenSearch Dashboards CVSS 4.0MEDIUM 6.3
- TI-2026-54191 Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards CVSS 4.0MEDIUM 6.2
- TI-2024-26795 OpenSearch Observability does not properly restrict access to private tenant resources CVSS 3.1MEDIUM 5.4
Sources
- CVE-2026-83497 · CVE Program
- CVE-2026-83497 · NVD
- FIRST EPSS
- GHSA-rj55-cp95-h7f6 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-83497 · Red Hat security data · CC BY 4.0
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