CVE-2026-18830— Insufficient input validation in Amazon Bedrock AgentCore harness InvokeHarness API
Quick assessment
Affected
AWS Amazon Bedrock AgentCore harness
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Amazon Bedrock AgentCore harness InvokeHarness API是美国Amazon公司的一个托管式AI智能体调用接口。 Amazon Bedrock AgentCore harness InvokeHarness API存在软件供应链问题漏洞，该漏洞源于输入验证不足，可能导致经过身份验证的远程用户通过对话消息中的特制内容块绕过模型调用和安全控制，执行已配置的工具。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| AWS | Amazon Bedrock AgentCore harness | N/A |
affected |
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I. Basic Information for CVE-2026-18830
Vulnerability Information
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Vulnerability Title
Insufficient input validation in Amazon Bedrock AgentCore harness InvokeHarness API
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient input validation in Amazon Bedrock AgentCore harness might allow an authenticated remote user to execute configured tools bypassing model invocation and security controls via crafted content blocks in conversation messages. AWS has addressed this issue. No customer action is required.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1287
Source: CVE Program / CVE List V5
Vulnerability Title
Amazon Bedrock AgentCore harness InvokeHarness API 软件供应链问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Amazon Bedrock AgentCore harness InvokeHarness API是美国Amazon公司的一个托管式AI智能体调用接口。 Amazon Bedrock AgentCore harness InvokeHarness API存在软件供应链问题漏洞，该漏洞源于输入验证不足，可能导致经过身份验证的远程用户通过对话消息中的特制内容块绕过模型调用和安全控制，执行已配置的工具。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| AWS | Amazon Bedrock AgentCore harness | N/A | - |
|
II. Public POCs for CVE-2026-18830
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-18830 (1)
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V. Comments for CVE-2026-18830
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