OS Command Injection in aws-cdk-lib (CVE-2026-11417)
Summary
OS command injection in aws-cdk-lib (CVE-2026-11417). Successful exploitation can lead to full system takeover. Exploitable via ``NodejsFunction``. Mitigation: upgrade to `2.246.0` 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-cdk-lib' . | 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-cdk-lib` 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
Ensure the values supplied to `NodejsFunction` bundling properties (`externalModules`, `define`, `loader`, `inject`, `esbuildArgs`) originate only from trusted sources, and audit third-party constructs and pull requests that set them.パッチが適用されるまでの応急処置として、Ensure the values supplied to `NodejsFunction` bundling properties (`externalModules`, `define`, `loader`, `inject`, `esbuildArgs`) originate only from trusted sources, and audit third-party constructs and pull requests that set them. 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-cdk-lib to 2.246.0ステージング環境で 2.246.0 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
- web ff89ba41-3aa1-4d27-914a-91399e9639e5
- web https://github.com/aws/aws-cdk/releases/tag/v2.245.0
- web https://github.com/aws/aws-cdk/security/advisories/GHSA-999r-qq7v-r334
- web https://nvd.nist.gov/vuln/detail/CVE-2026-11417
- web https://github.com/aws/aws-cdk/pull/37292
- web https://github.com/aws/aws-cdk/pull/37412
- web https://aws.amazon.com/security/security-bulletins/2026-041-aws
- web https://github.com/advisories/GHSA-999r-qq7v-r334