Amazon Patched Vulnerabilities in Bedrock AgentCore SDK
The update secures AWS environments against remote command execution and credential access threats.
Updated on Sept. 29, 2026 in Cybersecurity
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Amazon has released a patch for the Bedrock AgentCore SDK to address two security vulnerabilities that could allow unauthorized command execution and credential access. These flaws affected various versions of the software development kit used to build AI agents.
Why it matters
The vulnerabilities posed a risk to developers deploying AI agents, as they could be exploited to compromise underlying infrastructure credentials. This update aims to secure the integration between AWS AI tools and user-managed environments.
The vulnerabilities carry a 7.3 score on the CVSS 3.1 scale and an 8.4 score under CVSS 4.0. The patches are included in SDK version 1.18.1, which replaces affected versions including 1.1.3 through 1.6.0.
The players
Amazon
A global cloud computing leader that manages the AWS platform and the Bedrock AI infrastructure.
BeyondTrust
A cybersecurity firm specializing in identity and access management that discovered these vulnerabilities.
The details
Attackers exploited the vulnerabilities by using crafted package names to bypass an incomplete blocklist, a filter that identifies and blocks specific prohibited characters. Furthermore, they abused the pip package extras syntax, an installation feature used to install optional dependencies, to pass shell commands through validation rules. Successful exploitation required specific conditions, including attacker-influenced input and a custom Code Interpreter, a tool that allows agents to write and execute code, with an attached execution role.
Timeline
September 28, 2026: BeyondTrust published a technical write-up detailing the security flaws.
September 29, 2026: Article publication date.
The Tech Race
This update reflects the ongoing effort to secure the Bedrock AgentCore SDK against common injection techniques that threaten AI-integrated workflows. It aligns with broader industry trends to harden the interface between large-scale AI agents and cloud access control policies.
Developers and organizations using Bedrock AgentCore should immediately update their SDK installations to version 1.18.1 or later. This is necessary to mitigate the risk of remote command execution and the potential loss of AWS execution credentials.
The takeaway
The discovery underscores the necessity of strict input validation when using tools that interpret and execute code. Organizations should audit their current SDK versioning to ensure all environments are running the latest patched release.
Further reading
For more information on securing cloud-integrated development tools, visit the Cybersecurity section.
Source note: This article includes information reported by Infosecurity Magazine.
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