Orval Mock Generation Code Injection via const
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-77.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| orval-labs | orval | before 7.20.0; 8.0.0-rc.0 to before 8.0.3 | 7.20.0, 8.0.3 | Patch available | CNA |
| — | @orval/mock (npm) | before 7.20.0 | 7.20.0 | Patch available | GHSA-f456-rf33-4626 |
| — | @orval/mock (npm) | 8.0.0-rc.0 to before 8.0.3 | 8.0.3 | Patch available | GHSA-f456-rf33-4626 |
- orval Vendororval-labs Affected before 7.20.0; 8.0.0-rc.0 to before 8.0.3 Fixed in 7.20.0, 8.0.3 Patch available CNA
- @orval/mock (npm) Vendor— Affected before 7.20.0 Fixed in 7.20.0 Patch available GHSA-f456-rf33-4626
- @orval/mock (npm) Vendor— Affected 8.0.0-rc.0 to before 8.0.3 Fixed in 8.0.3 Patch available GHSA-f456-rf33-4626
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:orval:orval:*:*:*:*:*:*:*:* | 6.0.0 to before 7.20.0; 8.0.0 to before 8.0.3 | Vulnerable | orval-labs |
- cpe:2.3:a:orval:orval:*:*:*:*:*:*:*:* Versions 6.0.0 to before 7.20.0; 8.0.0 to before 8.0.3 Vulnerable ·orval-labs
Remediation
- Fix · CNA orval (orval-labs) Fixed in 7.20.0, 8.0.3
- Fix · GHSA-f456-rf33-4626 @orval/mock (npm) Fixed in 7.20.0 Advisory →
- Fix · GHSA-f456-rf33-4626 @orval/mock (npm) Fixed in 8.0.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-24132
- 2026-10-03 Alias added: GHSA-f456-rf33-4626
References
Patch 6
- https://github.com/orval-labs/orval/pull/2828
- https://github.com/orval-labs/orval/pull/2829
- https://github.com/orval-labs/orval/pull/2830
- https://github.com/orval-labs/orval/commit/44ca8c1f5f930a3e4cefb6b79b38bcde7f8532a5
- https://github.com/orval-labs/orval/commit/6d8ece07ccb80693ad43edabccb3957aceadcd06
- https://github.com/orval-labs/orval/commit/9b211cddc9f009f8a671e4ac5c6cb72cd8646b62
Advisory 2
More orval-labs Orval vulnerabilities
- TI-2026-19289 Orval MCP client is vulnerable to code injection via unsanitized x-enum-descriptions in enum generation CVSS 4.0CRITICAL 9.3
- TI-2026-20303 Orval has a code injection via unsanitized x-enum-descriptions uing JS comments CVSS 4.0CRITICAL 9.3
- TI-2026-18303 orval MCP client is vulnerable to a code injection attack. CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-24132 · CVE Program
- CVE-2026-24132 · NVD
- FIRST EPSS
- GHSA-f456-rf33-4626 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences