Orval: Import-time RCE via header-parameter default -> zod module-level template literal
Published Aug 19, 2026
9.3
CRITICALCVSS 4.0
EPSS 0.65%
Description
Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Prior to 8.21.0, a ${...} expression or backtick in a header parameter default is emitted into a module-level template literal emitted by zod schema generation without safe encoding. This permits attacker-controlled JavaScript to be evaluated when the generated zod schema module is imported, resulting in code execution in the developer, CI, test, or application environment. The affected code is packages/zod/src/index.ts function formatDefaultValue. This issue is fixed in version 8.21.0.
Affected products
-
- Version < 8.21.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Orval-Labs | Orval | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
orval
npm
Introduced 0 Fixed 8.21.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | orval | 0 | 8.21.0 |
Remediation
No remediation recorded yet.
References (6)
- https://github.com/advisories/GHSA-8j6p-r8jg-mxqh Advisory
- https://github.com/orval-labs/orval/commit/8ef1bfdf3f9bcaf9dabfbe2e42887f1c0e159ab6 x_refsource_MISC
- https://github.com/orval-labs/orval/pull/3692 x_refsource_MISC
- https://github.com/orval-labs/orval/releases/tag/v8.21.0 x_refsource_MISC
- https://github.com/orval-labs/orval/security/advisories/GHSA-8j6p-r8jg-mxqh x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-71871
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-8j6p-r8jg-mxqh | Advisory | |
| https://github.com/orval-labs/orval/commit/8ef1bfdf3f9bcaf9dabfbe2e42887f1c0e159ab6 | x_refsource_MISC | |
| https://github.com/orval-labs/orval/pull/3692 | x_refsource_MISC | |
| https://github.com/orval-labs/orval/releases/tag/v8.21.0 | x_refsource_MISC | |
| https://github.com/orval-labs/orval/security/advisories/GHSA-8j6p-r8jg-mxqh | x_refsource_CONFIRM | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-71871 |
Change history (0)
No recorded changes yet.