Vulnerability-Lookup

GHSA-999R-QQ7V-R334

Vulnerability from github – Published: 2026-06-15 20:47 – Updated: 2026-06-15 20:47

Summary

aws-cdk-lib: OS Command Injection in NodejsFunction Bundling

Details

Summary

AWS CDK (aws-cdk-lib) is an open-source framework for defining cloud infrastructure in code and provisioning it through AWS CloudFormation. OS command injection in the NodejsFunction local bundling pipeline in aws-cdk-lib before 2.245.0 (2.246.0 on Windows) might allow a threat actor who controls the value of one or more bundling properties (externalModules, define, loader, inject, or esbuildArgs) to execute arbitrary commands on the host running the CDK toolchain via injected shell metacharacters. This issue requires the threat actor to control the value of one or more of the affected bundling properties in the CDK application.

Impact

During local Lambda bundling, NodejsFunction assembled an esbuild command string from the bundling properties externalModules, define, loader, inject, and esbuildArgs and executed it via a shell (bash -c on Linux/macOS, cmd /c on Windows) through spawnSync. The property values were interpolated without escaping or validation, so values containing shell metacharacters could execute arbitrary commands with the privileges of the user running cdk synth, cdk deploy, or cdk diff. Exploitation requires a threat actor to control one or more of the affected property values in the CDK application — for example via an untrusted npm dependency that vends a wrapper construct, or via a pull request that introduces untrusted values.

Impacted versions:

< 2.245.0 (on Windows, < 2.246.0)

Patches

This issue has been addressed in aws-cdk-lib version 2.245.0 (PR #37292), with a Windows-specific regression fix in 2.246.0 (PR #37412). The fix replaces shell-based command execution with array-based spawnSync invocation that does not invoke a shell. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.

Workarounds

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. Upgrading to a fixed version is the recommended remediation.

References

If you have any questions or comments about this advisory, we ask that you contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

Acknowledgement

AWS would like to thank the external researcher Hesham Ashraf who reported this issue through the AWS Vulnerability Disclosure Program (HackerOne) for collaborating on it through the coordinated vulnerability disclosure process.

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

7.0 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "aws-cdk-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.246.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-11417"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-15T20:47:36Z",
    "nvd_published_at": "2026-06-10T18:16:39Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nAWS CDK (`aws-cdk-lib`) is an open-source framework for defining cloud infrastructure in code and provisioning it through AWS CloudFormation. OS command injection in the `NodejsFunction` local bundling pipeline in `aws-cdk-lib` before 2.245.0 (2.246.0 on Windows) might allow a threat actor who controls the value of one or more bundling properties (`externalModules`, `define`, `loader`, `inject`, or `esbuildArgs`) to execute arbitrary commands on the host running the CDK toolchain via injected shell metacharacters. This issue requires the threat actor to control the value of one or more of the affected bundling properties in the CDK application.\n\n### Impact\nDuring local Lambda bundling, `NodejsFunction` assembled an esbuild command string from the bundling properties `externalModules`, `define`, `loader`, `inject`, and `esbuildArgs` and executed it via a shell (`bash -c` on Linux/macOS, `cmd /c` on Windows) through `spawnSync`. The property values were interpolated without escaping or validation, so values containing shell metacharacters could execute arbitrary commands with the privileges of the user running `cdk synth`, `cdk deploy`, or `cdk diff`. Exploitation requires a threat actor to control one or more of the affected property values in the CDK application \u2014 for example via an untrusted npm dependency that vends a wrapper construct, or via a pull request that introduces untrusted values.\n\n### Impacted versions: \n\u003c 2.245.0 (on Windows, \u003c 2.246.0)\n\n### Patches\nThis issue has been addressed in `aws-cdk-lib` version 2.245.0 (PR #37292), with a Windows-specific regression fix in 2.246.0 (PR #37412). The fix replaces shell-based command execution with array-based `spawnSync` invocation that does not invoke a shell. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.\n\n### Workarounds\nEnsure 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. Upgrading to a fixed version is the recommended remediation.\n\n### References\nIf you have any questions or comments about this advisory, we ask that you contact AWS Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.\n\n### Acknowledgement \nAWS would like to thank the external researcher Hesham Ashraf who reported this issue through the AWS Vulnerability Disclosure Program (HackerOne) for collaborating on it through the coordinated vulnerability disclosure process.",
  "id": "GHSA-999r-qq7v-r334",
  "modified": "2026-06-15T20:47:36Z",
  "published": "2026-06-15T20:47:36Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/aws/aws-cdk/security/advisories/GHSA-999r-qq7v-r334"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11417"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aws/aws-cdk/pull/37292"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aws/aws-cdk/pull/37412"
    },
    {
      "type": "WEB",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-041-aws"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/aws/aws-cdk"
    },
    {
      "type": "WEB",
      "url": "https://github.com/aws/aws-cdk/releases/tag/v2.245.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "aws-cdk-lib: OS Command Injection in NodejsFunction Bundling"
}

CVE-2026-11417 (GCVE-0-2026-11417)

Vulnerability from cvelistv5 – Published: 2026-06-10 17:39 – Updated: 2026-06-10 18:17

Title

OS Command Injection in NodejsFunction Bundling in aws-cdk-lib

Summary

OS command injection in the NodejsFunction local bundling pipeline in aws-cdk-lib before 2.245.0 (2.246.0 on Windows) might allow an actor who controls the value of one or more bundling properties (externalModules, define, loader, inject, or esbuildArgs) to execute arbitrary commands on the host running the CDK toolchain via injected shell metacharacters. This issue requires the threat actor to control the value of one or more of the affected bundling properties in the CDK application. To remediate this issue, users should upgrade to aws-cdk-lib 2.245.0 (2.246.0 on Windows) or later.

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

7 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command

Assigner

AMZN

References

3 references

URL	Tags
https://github.com/aws/aws-cdk/releases/tag/v2.245.0	patch
https://aws.amazon.com/security/security-bulletin…	vendor-advisory
https://github.com/aws/aws-cdk/security/advisorie…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
AWS	AWS Cloud Development Kit library	Affected: 0 , < 2.245.0 (custom)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-999R-QQ7V-R334

Summary

Impact

Impacted versions:

Patches

Workarounds

References

Acknowledgement

CVE-2026-11417 (GCVE-0-2026-11417)

Tags

Sightings

Nomenclature