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AWS disclosed CVE-2026-16796, a high-severity command argument injection flaw in the Bedrock AgentCore Python SDK before version 1.18.1 that can let an authenticated user execute arbitrary commands inside the Code Interpreter sandbox. The issue affects the install_packages() function, where crafted Python package specifiers and improperly neutralized argument delimiters can be passed into a shell-backed pip install flow, resulting in CWE-88 command injection.
The vulnerability carries a CVSS v3.1 score of 7.3 and can expose sensitive data in the sandbox, including temporary files and environment tokens, with potential for further movement in weakly segmented environments. AWS said the fix in version 1.18.1 tightens validation for package inputs, including PEP 508 extras, and quotes package arguments with shlex.quote; users are advised to upgrade immediately to the patched release.
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2 events from the most recent confirmed update back to the earliest known activity.
Public disclosure of CVE-2026-16796 occurred on 2026-07-23. The vulnerability affects AWS Bedrock AgentCore Python SDK versions before 1.18.1 and involves improper neutralization of argument delimiters in install_packages().
AWS remediated CVE-2026-16796 in bedrock-agentcore version 1.18.1 by tightening package validation and quoting package arguments in the install_packages() flow. The fix addressed an argument injection issue that could let an authenticated user execute arbitrary commands in the Code Interpreter sandbox.
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Amazon disclosed **CVE-2026-12530**, a high-severity command injection vulnerability in the AWS Bedrock AgentCore Python SDK. The flaw is caused by improper neutralization of argument delimiters in the `install_packages()` method, allowing a remote authenticated user to supply crafted package-name arguments and execute arbitrary commands inside the Code Interpreter sandbox. The issue affects AWS Bedrock AgentCore Python SDK versions **1.1.3 through 1.6.0** and is rated as remotely exploitable. AWS has published a security bulletin for the vulnerability, and the recommended mitigation is to upgrade affected deployments to **version 1.6.1**.
Jun 29, 2026
Researchers disclosed multiple **Amazon Bedrock AgentCore** security issues that can break the isolation expected in AI agent execution environments. One finding showed that *AgentCore Code Interpreter* sandboxes allowed outbound **DNS** queries despite a no-network-access design, enabling attackers to create a bidirectional command-and-control channel, exfiltrate data over DNS, and obtain an interactive shell. The impact depends heavily on the IAM role attached to the runtime: overprivileged access could expose AWS resources such as **S3** and allow broader compromise of data and connected services. A separate Bedrock AgentCore issue, tracked as **`CVE-2026-4269`**, affected the *AgentCore Starter Toolkit* and allowed **unauthenticated remote code execution** through **S3 bucket squatting**. By registering a predictable bucket name before a victim's build process, an attacker could inject malicious content into the agent runtime, gain control of the execution environment, manipulate model inputs and outputs, and potentially achieve lateral movement based on the runtime's IAM permissions. The flaw also introduced a **software supply chain** risk because compromised dependencies could be cached or embedded into CI/CD artifacts and persist across later deployments.
Jun 29, 2026
AWS published a series of security bulletins covering vulnerabilities across several products and SDKs, including **model artifact integrity verification issues** in the Amazon SageMaker Python SDK (`CVE-2026-8596`, `CVE-2026-8597`), a **heap out-of-bounds read** in `coreMQTT` MQTT5 property parsing (`CVE-2026-8686`), and a **remote code execution** flaw in the `amazon-redshift-python-driver` (`CVE-2026-8838`). The company also disclosed an **arbitrary file read** issue in the `rabbitmq-aws` plugin (`CVE-2026-9133`), **tool execution without authorization via piped stdin** in Kiro CLI (`CVE-2026-9255`), and **insecure deserialization** in Amazon Braket SDK job results processing (`CVE-2026-9291`). A separate advisory addressed **improper authentication token handling** in the Amazon WorkSpaces client for Linux. Taken together, the disclosures span cloud development tools, messaging components, data platforms, quantum-computing SDKs, and end-user clients, indicating a broad patching requirement for organizations using AWS software. Security teams should identify affected packages and clients in their environments and prioritize remediation for flaws that could enable **remote code execution, unauthorized actions, file disclosure, or unsafe processing of untrusted data**.
Jul 12, 2026