Vendor advisories

AWS Security Bulletins

Browse 152 advisories from this official source. Search by product, CVE, severity, or advisory ID.

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152 advisories

Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.

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AWS Security BulletinsCVE-2026-83497
Severity not listed

CVE-2026-83497 - OpenSearch SQL Plugin - Unrestricted Java Deserialization in Cursor Pagination

Bulletin ID: 2026-092-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/31/2026 11:30 AM PDT Description: OpenSearch is an open-source search and analytics engine. We identified CVE-2026-83497 where a remote authenticated user with basic read/sea...

Vendor guidance

Affected Products & Versions: OpenSearch SQL Plugin (open-source, self-managed): - Affected: v2.8 to v3.6 - Fixed: versions 3.7 and 2.19.6 Amazon OpenSearch Service (AWS Managed): - Affected: v2.9 to v3.5 - Fixed: v2....

AWS Security BulletinsCVE-2026-81849
Severity not listed

CVE-2026-81849 - Path traversal in the aws:downloadContent plugin in amazon-ssm-agent

Bulletin ID: 2026-091-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/28/2026 11:00 AM PDT Description: AWS Systems Manager Agent (amazon-ssm-agent) is Amazon software that runs on Amazon Elastic Compute Cloud (Amazon EC2) instances, edge devic...

Vendor guidance

Amazon-ssm-agent makes it possible for Systems Manager to update, manage, and configure these resources.

AWS Security BulletinsCVE-2026-109618
Severity not listed

PHP web runtimes (CVE-2026-109618 and CVE-2026-109619)

Bulletin ID: 2026-143-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/21/2026 14:30 PM PDT Summary: Two critical vulnerabilities in PHP (CVE-2026-109618 and CVE-2026-109619) allow an unauthenticated remote actor to execute code, access process-...

Vendor guidance

Customers running affected PHP versions (8.2-8.5 below the fixed releases, and end-of-life 5.4-8.1) should upgrade immediately to a patched release (8.5.12, 8.4.27, 8.3.36, or 8.2.35); configuration changes alone are ...

AWS Security BulletinsCVE-2026-112408
Severity not listed

CVE-2026-112408 - Missing bucket ownership verification in Amazon SageMaker Python SDK default_bucket()

Bulletin ID: 2026-142-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/21/2026 12:30 PM PDT Description: The Amazon SageMaker Python SDK is an open-source library for training and deploying machine learning models on Amazon SageMaker. We identif...

AWS Security BulletinsCVE-2026-77234
Severity not listed

Issue with FreeRTOS-Kernel - CVE-2026-77234, CVE-2026-77235, CVE-2026-77236, CVE-2026-77237

Bulletin ID: 2026-086-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/21/2026 10:30 AM PDT Description: FreeRTOS-Kernel is a real-time operating system kernel for microcontrollers and small microprocessors. AWS identified four issues with FreeR...

AWS Security BulletinsCVE-2026-77811
Severity not listed

CVE-2026-77811 - Stored Cross-Site Scripting via Integration Template Asset in OpenSearch Dashboards

Bulletin ID: 2026-088-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/21/2026 13:00 PM PDT Description: Amazon OpenSearch Service is a managed service that makes it easy to deploy, operate, and scale OpenSearch clusters. We identified CVE-2026-...

Vendor guidance

Affected products & versions: OpenSearch Dashboards dashboards-observability plugin (open-source, self-managed): - Affected: versions before 3.4 and versions before 2.19.6 - Fixed: versions 3.4 and 2.19.6 Amazon OpenS...

AWS Security BulletinsCVE-2026-75935
Severity not listed

CVE-2026-75935 and CVE-2026-75936 - Issue with Amazon ion-java - Memory-amplification denial of service

Bulletin ID: 2026-083-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/18/2026 12:30 PM PDT Description: ion-java is a Java library that implements the Amazon Ion data format specification. We identified CVE-2026-75935, memory-amplification deni...

AWS Security BulletinsCVE-2026-18420
Severity not listed

CVE-2026-18420 - Remote Code Execution via Prototype Pollution in OpenSearch Dashboards TSVB Plugin

Bulletin ID: 2026-085-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/20/2026 13:30 PM PDT Description: Improper input validation in the Time Series Visual Builder (TSVB) plugin in OpenSearch Dashboards before 3.8 allows a remote authenticated ...

Vendor guidance

To mitigate this issue, users should upgrade to OpenSearch Dashboards 3.8 or later.

AWS Security BulletinsCVE-2026-18428
Severity not listed

CVE-2026-18428 - OpenSearch SQL Plugin - Async Query Validation Bypass

Bulletin ID: 2026-081-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/13/2026 10:30 AM PDT Description: OpenSearch SQL plugin is a plugin that enables SQL and PPL query capabilities on OpenSearch clusters, including direct query integration wit...

Vendor guidance

Affected Products & Versions: OpenSearch SQL Plugin (open-source, self-managed): - Affected: v2.13 to v3.6 - Fixed: versions 3.7 and 2.19.6 Amazon OpenSearch Service (AWS Managed): - Affected: v2.13 to v3.5 - Fixed: v...

AWS Security BulletinsCVE-2026-75897
Severity not listed

CVE-2026-75897 - Uncontrolled resource consumption in OpenSearch Dashboards capabilities route

Bulletin ID: 2026-082-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 08/18/2026 10:00 AM PDT Description: OpenSearch Dashboards is the open-source visualization and management UI for OpenSearch, and ships as part of Amazon OpenSearch Service. We ...

Vendor guidance

- Fixed: 3.8.0 Amazon OpenSearch Service (AWS Managed): - Affected: Engine versions OpenSearch 1.3, 2.11, 2.13, 2.15, 2.17, 2.19, 3.1, 3.3, and 3.5, and Elasticsearch-compatibility versions using Kibana 7.9 and 7.10.

AWS Security BulletinsCVE-2026-18952
Severity not listed

CVE-2026-18952 - Missing Input Validation in OpenSearch Security Analytics Plugin

Open the original vendor bulletin for the full description and affected-version details.

Vendor guidance

Impacted Versions: OpenSearch Security Analytics Plugin (open-source, self-managed): - Affected: >= 2.15.0 - Fixed: >= 3.5.0 Amazon OpenSearch Service (AWS Managed): - Affected: Domains running engine versions >= 2.15...

Before you act

Start with the vendor's bulletin.

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Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.

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