AWS Security Bulletins: CVE-2026-85012 - OS command injection in the Amazon CodeCatalyst blueprints SDK
AWS Security Bulletins has published a new security advisory. Here is a summary and what to do.
Key points
- New advisory from AWS Security Bulletins.
- Review affected versions in the advisory.
- Apply updates promptly.
AWS Security Bulletins published a security advisory titled “CVE-2026-85012 - OS command injection in the Amazon CodeCatalyst blueprints SDK”.
At a glance
- Publisher
- AWS Security Bulletins
- CVEs
- CVE-2026-85012
What the advisory says
Bulletin ID: 2026-095-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 09/03/2026 10:00 AM PDT Description: Amazon CodeCatalyst blueprints are reusable project templates that generate a software project. The @amazon-codecatalyst/blueprints.blueprint npm package is the open source framework that blueprint authors build on, published from github.com/aws/codecatalyst-blueprints. We identified CVE-2026-85012 in the blueprint resynthesis framework. During resynthesis, the framework reads the .ownership-file from the existing project to determine which files a blueprint may modify. In versions before 0.3.156, the owner field of a [local] merge strategy entry in the .ownership-file was passed to an operating system command through a shell without validation. A user with permission to commit to a repository in the project could place shell metacharacters in that fiel
What should you do?
- Read the full vendor advisory linked below and confirm whether you run affected versions.
- Schedule the recommended update, prioritising internet-facing systems.
- Watch for exploitation reports; unpatched edge devices are frequent targets.
What to do and how to stay safe: CVE-2026-85012
- Vulnerability severity scores ignore your specific architecture and context.
- Exploitability depends on network exposure and user behavior, not just code flaws.
- Prioritization requires continuous asset inventory and threat intelligence alignment.
Risk-based vulnerability management focuses your limited resources on the flaws that actually threaten your business. Start by mapping your critical assets and checking for active exploits to prioritize your backlog.
Step-by-step guide: Risk-Based Vulnerability Management: Prioritize Fixes by Actual Danger
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
