Vulnerability · Published Aug 19, 2026 · Assigned by GitHub_M

CVE-2026-72716Orval: Import-time RCE via query-parameter default -> zod module-level template literal

Critical 9.3

In plain English

A critical-severity security flaw in orval from orval-labs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.7%top 48.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 query 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	orval	8.21.0	GHSA-p4cg-3328-rvfg

Affected products (as reported)

Vendor	Product	Versions
orval-labs	orval	< 8.21.0

Weakness: CWE-1336 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/orval-labs/orval/security/advisories/GHSA-p4cg-3328-rvfg x_refsource_CONFIRM
https://github.com/orval-labs/orval/pull/3692 x_refsource_MISC
https://github.com/orval-labs/orval/commit/8ef1bfdf3f9bcaf9dabfbe2e42887f1c0e159ab6 x_refsource_MISC
https://github.com/orval-labs/orval/releases/tag/v8.21.0 x_refsource_MISC