High severity · published Aug 31, 2026
CVE-2026-83497
Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination
8.8
CVSS
1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AO
Amazon OpenSearch Service · Amazon
2.9 through 3.5 · source: vendor
OP
OpenSearch · OpenSearch
2.8 through 3.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-83497
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-83497
aws.amazon.com
https://aws.amazon.com/security/security-bulletins/2026-092-aws/
opensearch.org
https://opensearch.org/artifacts/by-version/#release-2-19-6
opensearch.org
https://opensearch.org/artifacts/by-version/#release-3-7-0