CVE-2026-24132: @orval/mock Orval Mock Generation Code Injection Vulnerability

HIGH
Advisory Identifier: GHSA-f456-rf33-4626
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CWE-94 CWE-77
Published
Advisory Summary

CVE-2026-24132 is a HIGH orval mock generation code injection vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting @orval/mock libraries in the npm ecosystem. The issue involves orval mock generation code injection via const. Remediation is available by upgrading affected packages to version 7.20.0, 8.0.3.

CVE-2026-24132 at a Glance

CVE Identifier CVE-2026-24132
GHSA Identifier GHSA-f456-rf33-4626
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product @orval/mock
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-24132

To remediate this vulnerability, upgrade all affected @orval/mock dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

@orval/mock fixed: 7.20.0 
npm install @orval/mock@7.20.0
@orval/mock fixed: 8.0.3 
npm install @orval/mock@8.0.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls @orval/mock

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-24132, inspect your project dependencies using npm:

npm ls @orval/mock

Analyze the terminal output to locate any version of @orval/mock in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.20.0), your application is affected.

Note: The npm ls @orval/mock command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In @orval/mock, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

I am reporting a code injection vulnerability in Orval’s mock generation pipeline affecting @orval/mock in both the 7.x and 8.x series. This issue is related in impact to the previously reported enum x-enumDescriptions (https://github.com/advisories/GHSA-h526-wf6g-67jv), but it affects a different code path in the faker-based mock generator rather than @orval/core. The vulnerability allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript into generated mock files via the const keyword on schema properties. These const values are interpolated into the mock scalar generator (getMockScalar in packages/mock/src/faker/getters/scalar.ts) without proper escaping or type-safe serialization, which results in attacker-controlled code being emitted into both interface definitions and faker/MSW handlers. I have confirmed that this occurs on orval@7.19.0 and orval@8.0.2 with mock: true, and that the generated mocks contain executable payloads such as require('child_process').execSync('id') in the output TypeScript. ```yaml openapi: 3.1.0 info: title: Mock Const Injection PoC version: 1.0.0 paths: /test: get: operationId: getTests responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/Tests' components: schemas: Tests: type: object properties: EvilString: type: string const: "'); require('child_process').execSync('id'); //" EvilNumber: type: number const: "0); require('child_process').execSync('id'); //" SafeEnum: type: string enum: ["test"] ```

CVE-2026-24132 Affected @orval/mock Versions

2 component(s)
Fixed Versions:
7.20.08.0.3
Product / Package Ecosystem Affected Versions Fixed Version
@orval/mock
npm/@orval/mock
npm
< 7.20.0
7.20.0
@orval/mock
npm/@orval/mock
npm
≥ 8.0.0-rc.0
< 8.0.3
8.0.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/orval-labs/orval/security/advisories/GHSA-f456-rf33-4626
NVD — CVE-2026-24132 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24132
@orval/mock Source Repository REPOSITORY
https://github.com/orval-labs/orval/pull/2828
@orval/mock Source Repository REPOSITORY
https://github.com/orval-labs/orval/pull/2829
@orval/mock Source Repository REPOSITORY
https://github.com/orval-labs/orval/pull/2830
Security Fix Commit FIX COMMIT
https://github.com/orval-labs/orval/commit/44ca8c1f5f930a3e4cefb6b79b38bcde7f8532a5
Security Fix Commit FIX COMMIT
https://github.com/orval-labs/orval/commit/6d8ece07ccb80693ad43edabccb3957aceadcd06
Security Fix Commit FIX COMMIT
https://github.com/orval-labs/orval/commit/9b211cddc9f009f8a671e4ac5c6cb72cd8646b62
@orval/mock Source Repository REPOSITORY
https://github.com/orval-labs/orval
@orval/mock Release RELEASE
https://github.com/orval-labs/orval/releases/tag/v7.20.0
@orval/mock Release RELEASE
https://github.com/orval-labs/orval/releases/tag/v8.0.3

Frequently Asked Questions

What is CVE-2026-24132?
CVE-2026-24132 is a security vulnerability in @orval/mock involving Orval Mock Generation Code Injection via const under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which @orval/mock versions are affected?
Affected versions include releases prior to 7.20.0, 8.0.3 across affected packages: @orval/mock.
What version fixes CVE-2026-24132?
Upgrading to 7.20.0, 8.0.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @orval/mock affected?
Yes, @orval/mock is affected in releases prior to 7.20.0, 8.0.3. Upgrade your dependency to 7.20.0, 8.0.3 or later.
What CWE is associated with CVE-2026-24132?
CVE-2026-24132 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check npm dependencies for CVE-2026-24132?
Run the dependency tree command: 'npm ls @orval/mock'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-f456-rf33-4626",
  "modified" : "2026-02-27T22:18:34Z",
  "published" : "2026-01-22T18:09:13Z",
  "aliases" : [ "CVE-2026-24132" ],
  "summary" : "Orval Mock Generation Code Injection via const",
  "details" : "I am reporting a code injection vulnerability in Orval’s mock generation pipeline affecting @orval/mock in both the 7.x and 8.x series. This issue is related in impact to the previously reported enum x-enumDescriptions (https://github.com/advisories/GHSA-h526-wf6g-67jv), but it affects a different code path in the faker-based mock generator rather than @orval/core.\n\nThe vulnerability allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript into generated mock files via the const keyword on schema properties. These const values are interpolated into the mock scalar generator (getMockScalar in packages/mock/src/faker/getters/scalar.ts) without proper escaping or type-safe serialization, which results in attacker-controlled code being emitted into both interface definitions and faker/MSW handlers. I have confirmed that this occurs on orval@7.19.0 and orval@8.0.2 with mock: true, and that the generated mocks contain executable payloads such as require('child_process').execSync('id') in the output TypeScript.\n\n```yaml\nopenapi: 3.1.0\ninfo:\n  title: Mock Const Injection PoC\n  version: 1.0.0\npaths:\n  /test:\n    get:\n      operationId: getTests\n      responses:\n        '200':\n          description: OK\n          content:\n            application/json:\n              schema:\n                $ref: '#/components/schemas/Tests'\ncomponents:\n  schemas:\n    Tests:\n      type: object\n      properties:\n        EvilString:\n          type: string\n          const: \"'); require('child_process').execSync('id'); //\"\n        EvilNumber:\n          type: number\n          const: \"0); require('child_process').execSync('id'); //\"\n        SafeEnum:\n          type: string\n          enum: [\"test\"]\n\n```",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@orval/mock"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "7.20.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@orval/mock"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0-rc.0"
      }, {
        "fixed" : "8.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/security/advisories/GHSA-f456-rf33-4626"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24132"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/pull/2828"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/pull/2829"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/pull/2830"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/commit/44ca8c1f5f930a3e4cefb6b79b38bcde7f8532a5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/commit/6d8ece07ccb80693ad43edabccb3957aceadcd06"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/commit/9b211cddc9f009f8a671e4ac5c6cb72cd8646b62"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/orval-labs/orval"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/releases/tag/v7.20.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/orval-labs/orval/releases/tag/v8.0.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77", "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-22T18:09:13Z",
    "nvd_published_at" : "2026-01-23T00:15:52Z"
  }
}