Log in Start free

Vulnerability · Published Jan 22, 2026 · Assigned by GitHub_M

CVE-2026-24132Orval Mock Generation Code Injection via const

High 7.7

In plain English

A high-severity command injection in orval from orval-labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.7High
Exploit odds (30 days)0.7%top 45.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions 7.19.0 and below and 8.0.0-rc.0 through 8.0.2 allow 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. The vulnerability is similar in impact to the previously reported enum x-enumDescriptions (GHSA-h526-wf6g-67jv), but it affects a different code path in the faker-based mock generator rather than @orval/core. The issue has been fixed in versions 7.20.0 and 8.0.3.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npm@orval/mock7.20.0GHSA-f456-rf33-4626
npm@orval/mock8.0.3GHSA-f456-rf33-4626

Affected products (as reported)

VendorProductVersions
orval-labs orval < 7.20.0>= 8.0.0-rc.0, < 8.0.3

Weakness: CWE-77 · Vector: 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

References