CVE-2026-15746: CWE-918 Server-Side request forgery (SSRF) in Amazon strands-agents-tools
Bulletin ID: 2026-056-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 07/15/2026 11:30 AM PDT Description: Strands Agents is an open-source Python SDK for building and running AI agents. The strands-agents-tools package provides pre-built tools for use with the SDK, including the elasticsearch_memory tool for agent memory storage. We identified CVE-2026-15746, a server-side request forgery (SSRF) issue in the elasticsearch_memory tool. The tool exposed its connection parameters (es_url, cloud_id, api_key) as fields the large language model (LLM) could control through the tool schema. When a caller omitted the api_key parameter, the tool fell back to the operator's ELASTICSEARCH_API_KEY environment variable and sent it to whichever host the LLM specified. A crafted prompt could cause the tool to connect to a threat-actor-controlled server and disclose the operator's Elasticsearch API key in the Authorization header. Impacted versions: < 0.7.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
AI Analysis
Technical Summary
The strands-agents-tools package includes the elasticsearch_memory tool which exposes connection parameters (es_url, cloud_id, api_key) controllable by the LLM through the tool schema. If the api_key parameter is omitted, the tool uses the operator's ELASTICSEARCH_API_KEY environment variable and sends it to the host specified by the LLM. This behavior enables an attacker to craft prompts that cause the tool to connect to a malicious server and disclose the operator's Elasticsearch API key in the Authorization header. This SSRF vulnerability is tracked as CVE-2026-15746 and affects versions before 0.7.0.
Potential Impact
An attacker can exploit this SSRF vulnerability to cause the elasticsearch_memory tool to send sensitive credentials (the operator's Elasticsearch API key) to an attacker-controlled server. This could lead to unauthorized access to Elasticsearch resources using the disclosed API key. The vulnerability does not require privileges or user interaction beyond providing crafted prompts to the LLM controlling the tool.
Mitigation Recommendations
A patch is available for versions prior to 0.7.0. Users should upgrade to version 0.7.0 or later to remediate this vulnerability. Refer to the AWS Security Bulletin at https://aws.amazon.com/security/security-bulletins/2026-056-aws/ for the latest remediation guidance.
CVE-2026-15746: CWE-918 Server-Side request forgery (SSRF) in Amazon strands-agents-tools
Description
Bulletin ID: 2026-056-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 07/15/2026 11:30 AM PDT Description: Strands Agents is an open-source Python SDK for building and running AI agents. The strands-agents-tools package provides pre-built tools for use with the SDK, including the elasticsearch_memory tool for agent memory storage. We identified CVE-2026-15746, a server-side request forgery (SSRF) issue in the elasticsearch_memory tool. The tool exposed its connection parameters (es_url, cloud_id, api_key) as fields the large language model (LLM) could control through the tool schema. When a caller omitted the api_key parameter, the tool fell back to the operator's ELASTICSEARCH_API_KEY environment variable and sent it to whichever host the LLM specified. A crafted prompt could cause the tool to connect to a threat-actor-controlled server and disclose the operator's Elasticsearch API key in the Authorization header. Impacted versions: < 0.7.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.
CVSS v4.0
Score 6.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The strands-agents-tools package includes the elasticsearch_memory tool which exposes connection parameters (es_url, cloud_id, api_key) controllable by the LLM through the tool schema. If the api_key parameter is omitted, the tool uses the operator's ELASTICSEARCH_API_KEY environment variable and sends it to the host specified by the LLM. This behavior enables an attacker to craft prompts that cause the tool to connect to a malicious server and disclose the operator's Elasticsearch API key in the Authorization header. This SSRF vulnerability is tracked as CVE-2026-15746 and affects versions before 0.7.0.
Potential Impact
An attacker can exploit this SSRF vulnerability to cause the elasticsearch_memory tool to send sensitive credentials (the operator's Elasticsearch API key) to an attacker-controlled server. This could lead to unauthorized access to Elasticsearch resources using the disclosed API key. The vulnerability does not require privileges or user interaction beyond providing crafted prompts to the LLM controlling the tool.
Mitigation Recommendations
A patch is available for versions prior to 0.7.0. Users should upgrade to version 0.7.0 or later to remediate this vulnerability. Refer to the AWS Security Bulletin at https://aws.amazon.com/security/security-bulletins/2026-056-aws/ for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-07-14T14:55:13.322Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-056-aws/","vendor":"AWS"}]
Threat ID: 6a57d62468715ace4340ba11
Added to database: 07/15/2026, 18:49:08 UTC
Last enriched: 08/08/2026, 17:29:01 UTC
Last updated: 08/29/2026, 22:52:09 UTC
Views: 157
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