Vulnerability in Amazon AgentCore Python SDK (CVE-2026-15737)
Summary
Vulnerability in Amazon AgentCore Python SDK (CVE-2026-15737). Confidential information can be exposed externally.
Original description
The description as published by the 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.
Source: AWS Security Bulletins NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-15737 has been found in Amazon AgentCore Python SDK.
Confidential information can be exposed externally. CVSS score: 5.7/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Amazon AgentCore Python SDK CVE-2026-15737" on the vendor's site.
CVE-2026-15737 (Amazon AgentCore Python SDK) — CWE-532 / CVSS v3 5.7
Attack vector: remote (network-reachable)
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-532) exists in Amazon AgentCore Python SDK.
Check the vendor advisory for the affected versions of Amazon AgentCore Python SDK.
Severity: Medium (CVSS 5.7/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Amazon AgentCore Python SDK を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory aws.amazon.com
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- AWS aws.amazon.com
- patch pypi.org