Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination (CVE-2026-83497) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-83497

Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination

Answer in brief

CVE-2026-83497 records a Unknown severity vulnerability in Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination. The current sources do not mark it as known exploited. The current feed maps Amazon/Amazon OpenSearch Service (generic), OpenSearch/OpenSearch (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 31, 2026Updated Aug 31, 2026Source checked Aug 31, 2026First seen by HOL Aug 31, 2026Material review Aug 31, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Amazon/Amazon OpenSearch Service (generic), OpenSearch/OpenSearch (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Amazon/Amazon OpenSearch Servicegeneric	2.9	Not reported
OpenSearch/OpenSearchgeneric	2.8	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Amazon/Amazon OpenSearch Service, OpenSearch/OpenSearch.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 31, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 31, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.