Code Injection in Amazon @aws/agentcore (CVE-2026-11393)
Summary
code injection in Amazon @aws/agentcore (CVE-2026-11393). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `1.0.0-preview.9` or later.
AI summary snake-internal / snake-material-v2
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r '@aws/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 `@aws/agentcore` を grep し、稼働しているサービス・バージョンを把握する。
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5Apply temporary workaround mitigate
If an immediate upgrade is not possible, customers can manually inspect the generated main.py of the imported agent for any collaboratorInstruction values that contain triple double-quote character sequences and replace each occurrence with escaped eパッチが適用されるまでの応急処置として、If an immediate upgrade is not possible, customers can manually inspect the generated main.py of the imported agent for any collaboratorInstruction values that contain triple double-quote character sequences and replace each occurrence with escaped e を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade @aws/agentcore to 1.0.0-preview.9ステージング環境で 1.0.0-preview.9 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
References
- AWS https://aws.amazon.com/security/security-bulletins/rss/2026-040-aws/
- web ff89ba41-3aa1-4d27-914a-91399e9639e5
- web https://github.com/aws/agentcore-cli/releases/tag/v0.14.2
- web https://github.com/aws/agentcore-cli/security/advisories/GHSA-m4x6-gwgp-4pm7
- web https://www.npmjs.com/package/@aws/agentcore/v/0.14.2
- web https://www.npmjs.com/package/@aws/agentcore/v/1.0.0-preview.9
- web https://nvd.nist.gov/vuln/detail/CVE-2026-11393
- web https://github.com/aws/agentcore-cli/pull/1329
- web https://github.com/aws/agentcore-cli/commit/ae1b932ec91bacdbb7a3521f9f1fc24479a3d504
- web https://aws.amazon.com/security/security-bulletins/2026-040-aws
- web https://github.com/advisories/GHSA-m4x6-gwgp-4pm7