Amazon Bedrock AgentCore Flaws Could Expose AWS Credentials
Vulnerability: Amazon Bedrock AgentCore SDK flaws enabled AWS credential exposure via malicious package names.
Deep Analysis and Expert Commentary
The attack path exploited incomplete character blocklists (CVE-2026-12530) and pip extras syntax abuse (CVE-2026-16796) to bypass sandbox restrictions, executing shell commands within the Code Interpreter environment. Successful exploitation required three conditions: vulnerable SDK versions (1.1.3-1.6.0 or pre-1.18.1), attacker-controlled input reaching install_packages(), and an execution role attached to the Code Interpreter. While Firecracker isolation contained the sandbox, the SDK's command-building helper became the weak link. Mitigations include upgrading to SDK 1.18.1+, eliminating unnecessary execution roles, and implementing strict IAM least-privilege policies for AI workloads. Log monitoring is critical as malicious activity may mimic legitimate application behavior.
Action Items
- Upgrade Amazon Bedrock AgentCore SDK to version 1.18.1 or later
- Remove execution roles from Code Interpreters unless AWS access is explicitly required
- Implement granular IAM permissions and monitor Code Interpreter activity logs
Original Article Brief Intro
Infosecurity Magazine · 2026-09-29 · Vulnerability: Amazon Bedrock AgentCore SDK flaws enabled AWS credential exposure via malicious package names.
Related Terms and Notes
CVE IDs
- CVE-2026-12530
- CVE-2026-16796
Techniques / TTPs
- AWS Credentials
- RCE
Context Notes
- AgentCore — Amazon's Python SDK for building AI agents in Bedrock's managed service environment
- AI Sandbox
- AI Security
- Amazon Bedrock
- AWS
- Code Injection
- Code Interpreter — Sandboxed execution environment for AI agents to process code and data securely
- Python SDK