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CVE-2026-12530 high CVSS 7.3

Vulnerability in Amazon bedrock-agentcore (CVE-2026-12530)

Summary

Vulnerability in Amazon bedrock-agentcore (CVE-2026-12530). Confidential information can be exposed externally. Mitigation: upgrade to 1.6.1 or later.

Original description

The description as published by the source.

Summary

The AWS Bedrock AgentCore Python SDK (bedrock-agentcore) is an open-source SDK that enables developers to build, deploy, and manage agents on AWS Bedrock AgentCore. An issue exists in the install_packages() method of the Code Interpreter client where crafted package name arguments can bypass input validation and allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox.

Impact

The install_packages() method constructs a 'pip install' shell command executed within the Code Interpreter sandbox using package name arguments provided by the caller. The method applied an incomplete blocklist that allowed crafted package name arguments - specifically pip flags such as '--index-url' and '-r' - to pass validation unchecked. A remote authenticated user who can influence the arguments passed to install_packages() could redirect package resolution to a third-party-controlled PyPI server, or expose the contents of arbitrary sandbox files and environment variables.

Impacted versions: AWS Bedrock AgentCore Python SDK (bedrock-agentcore) versions >= 1.1.3 and < 1.6.1

Patches

This issue has been addressed in bedrock-agentcore version 1.6.1. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.

Workarounds

If you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages(). Rest…

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-2026-12530 has been found in Amazon bedrock-agentcore.
Confidential information can be exposed externally. CVSS score: 7.3/10.
What to do: upgrade Amazon bedrock-agentcore to 1.6.1 or later.
If unsure, ask your IT team or search "Amazon bedrock-agentcore CVE-2026-12530" on the vendor's site.

CVE-2026-12530 (Amazon bedrock-agentcore) — CWE-88 / CVSS v3 7.3
Attack vector: remote (network-reachable)
Patched: 1.6.1 — apply immediately
Workaround: If you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages().
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.

❓ What is the problem

A vulnerability (CWE-88) exists in Amazon bedrock-agentcore.

📍 Affected scope

Check the vendor advisory for the affected versions of Amazon bedrock-agentcore.

🔥 Severity

Severity: High (CVSS 7.3/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 1.6.1.

🛡️ Workaround

Workaround: If you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages().

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'bedrock-agentcore' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'bedrock-agentcore' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で bedrock-agentcore を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply temporary workaround mitigate 
    If you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages().

    パッチが適用されるまでの応急処置として、If you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages(). を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 3
    Apply patch patch 
    Upgrade Amazon bedrock-agentcore to 1.6.1

    ステージング環境で 1.6.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  4. 4
    Post-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。

Affected packages

pip bedrock-agentcore
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1"}]}]
PyPI bedrock-agentcore
[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.3"},{"fixed":"1.6.1"}]}]

References

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