CVE-2026-15737
MediumCVSS 5.7Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
A vulnerability in AWS Bedrock AgentCore Python SDK versions 1.4.8 and 1.5.0 causes unintended logging of sensitive user content to CloudWatch Logs. The SDK writes raw user prompts and agent responses as OpenTelemetry span attributes without filtering or masking.
Risk Assessment
A local authenticated user with access to CloudWatch Logs can read sensitive data, including raw prompts and agent responses, leading to exposure of confidential information.
Recommendation
Upgrade to version 1.5.1 or later immediately. Users of affected versions should also review and purge sensitive content from their aws/spans CloudWatch log groups.
Other vulnerabilities in AWS Bedrock AgentCore Python SDK
See all- CVE-2026-16796High
Improper neutralization of argument delimiters in the install_packages() method in AWS Bedrock AgentCore Python SDK before 1.18.1 might allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments.
- CVE-2026-12530High
The install_packages() method in AWS Bedrock AgentCore Python SDK versions >= 1.1.3 and < 1.6.1 has improper neutralization of argument delimiters, which may allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments.
Original NVD description (English source)
AWS Bedrock AgentCore Python SDK is an open-source Python library that provides client tools for building AI agents on the Amazon Bedrock AgentCore platform. Unintended logging of sensitive user content in the OpenTelemetry instrumentation in AWS Bedrock AgentCore Python SDK versions 1.4.8 and 1.5.0 might allow a local authenticated user with access to CloudWatch Logs to access raw user prompts and agent responses containing sensitive data via span attributes. The SDK wrote raw user prompts and complete agent responses into OpenTelemetry span attributes on every invocation without filtering or masking. These spans flow into the customer's aws/spans CloudWatch log group, exposing sensitive content to any principal with log read access. We recommend you upgrade to version 1.5.1 or later. Users who ran affected versions should also review and purge sensitive content from their aws/spans CloudWatch log groups.