Orval Mock Generation Code Injection via const
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@orval/mocknpm | < 7.20.0 | 7.20.0 |
@orval/mocknpm | >= 8.0.0-rc.0, < 8.0.3 | 8.0.3 |
Affected products
2- Range: v2.0.0, v2.0.1, v2.0.2, …
Patches
Vulnerability mechanics
References
11- github.com/advisories/GHSA-f456-rf33-4626ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-24132ghsaADVISORY
- github.com/orval-labs/orval/commit/44ca8c1f5f930a3e4cefb6b79b38bcde7f8532a5ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/commit/6d8ece07ccb80693ad43edabccb3957aceadcd06ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/commit/9b211cddc9f009f8a671e4ac5c6cb72cd8646b62ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/pull/2828ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/pull/2829ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/pull/2830ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/releases/tag/v7.20.0ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/releases/tag/v8.0.3ghsax_refsource_MISCWEB
- github.com/orval-labs/orval/security/advisories/GHSA-f456-rf33-4626ghsax_refsource_CONFIRMWEB
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