CVE-2026-4269 - Improper S3 ownership verification in Bedrock AgentCore Starter Toolkit
Amazon S3 ยท 2026-06-05
Actions
Technical Details
| Affected Versions | before v0.1.13 |
|---|---|
| Regions | all |
| CVE IDs | CVE-2026-4269 |
| Migration Required | Yes |
| Cost Impact | Neutral |
| IaC Impact | High |
What This Means
For DevOps Teams
Update the Bedrock AgentCore Starter Toolkit to version v0.1.13 or greater to address the security vulnerability (CVE-2026-4269) and prevent potential code injection during the build process.
For Platform Teams
Integrate the updated Bedrock AgentCore Starter Toolkit (version v0.1.13 or greater) to ensure proper S3 ownership verification and enhance the security posture of the platform.
For Executives
Implement the upgrade to Bedrock AgentCore Starter Toolkit version v0.1.13 or greater to mitigate the risk of code injection and unauthorized code execution due to improper S3 ownership verification (CVE-2026-4269).
Source
Related Amazon S3 Updates
- From data lake to AI-ready analytics: Introducing new data source with S3 Tables in Amazon Quick (2026-05-04)
- Amazon Quick now supports S3 tables bucket as a data source (2026-05-04)
- Announcing the general availability of Amazon S3 Transfer Manager for Swift (2026-05-04)
- Amazon S3 now supports five additional checksum algorithms (2026-04-23)
- Amazon S3 Express One Zone now supports S3 Inventory (2026-04-20)