EUVD-2026-36076Published

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

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-11417

Published

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.

Source published: 10 Jun 2026 17:39:18 UTC
Source modified: 10 Jun 2026 18:17:44 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS 4.0 · 7.0 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

euvd · EUVD-2026-36076

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jun 10, 2026, 5:39:18 PM

dateUpdated: Jun 10, 2026, 6:17:44 PM

Source published: Jun 10, 2026, 5:39:18 PM (timezone not stated)
Source modified: Jun 10, 2026, 6:17:44 PM (timezone not stated)
Observed here: 7 Nov 2026 04:36:03 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 7.0 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

nvd · CVE-2026-11417

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-78

Original publisher date fields

published: 2026-06-10T18:16:39.940

lastModified: 2026-10-26T11:10:00.157

Source published: 10 Jun 2026 18:16:39 UTC
Source modified: 26 Oct 2026 11:10:00 UTC
Observed here: 27 Oct 2026 06:23:14 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · ff89ba41-3aa1-4d27-914a-91399e9639e5 · Secondary · 7.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · ff89ba41-3aa1-4d27-914a-91399e9639e5 · Secondary · 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

osv · GHSA-999r-qq7v-r334

Published

### 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](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [[email protected]](mailto:[email protected]). 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.

Source published: 15 Jun 2026 20:47:36 UTC
Source modified: 15 Jun 2026 21:11:26 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS_V4 · 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

Publisher rating · HIGH