Server-side request forgery in Bedrock AgentCore Starter Toolkit
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
Amazon Bedrock AgentCore Starter Toolkit versions from 0.1.4 through 0.3.13 are affected. The OpenAPI schema processing during agent import is vulnerable to server-side request forgery (CWE-918) through crafted external reference values. An authenticated remote user in the same AWS account can make the environment of a user importing a Bedrock Agent issue arbitrary outbound requests and read arbitrary local files.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Server-side request forgery in the OpenAPI schema processing of the agent import functionality in Amazon Bedrock AgentCore Starter Toolkit before 0.3.14 might allow an authenticated remote actor in the same AWS account to cause the environment of a user importing a Bedrock Agent to issue arbitrary outbound requests and read arbitrary local files, via crafted external reference values in the OpenAPI content associated with a Bedrock Agent action group. To remediate this issue, users should upgrade to version 0.3.14. Note that bedrock-agentcore-starter-toolkit is deprecated. The @aws/agentcore npm CLI is the supported replacement and does not contain this issue. Migration to @aws/agentcore is the recommended long-term path.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade the Amazon Bedrock AgentCore Starter Toolkit to version 0.3.14. The bedrock-agentcore-starter-toolkit package is deprecated, and the @aws/agentcore npm CLI is the supported replacement that does not contain this issue.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-07 Threatist record created from CVE-2026-106032
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-07 Priority changed: MEDIUM → LOW
References
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Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences