Vulnerability · Published Aug 31, 2026 · Assigned by AMZN
CVE-2026-83497Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination
High 8.8
In plain English
A high-severity unsafe deserialization in Amazon OpenSearch Service from Amazon. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 38.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenSearch | OpenSearch | 2.8 – through 3.6 |
| Amazon | Amazon OpenSearch Service | 2.9 – through 3.5 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://opensearch.org/artifacts/by-version/#release-3-7-0 patch, release-notes
- https://opensearch.org/artifacts/by-version/#release-2-19-6 patch, release-notes
- https://aws.amazon.com/security/security-bulletins/2026-092-aws/ vendor-advisory