Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (GitHub_M) · only source for this CVE.
CVSS VectorVendor: GitHub_M
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4DescriptionCVE.org
Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Prior to 8.21.0, a double quote in a header parameter name is emitted into the generated request-validation zod.object({...}) schema 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 and header request-validation generation. This issue is fixed in version 8.21.0.
AnalysisAI
Code injection in Orval (orval-labs/orval) before 8.21.0 allows an attacker who controls an OpenAPI v3 or Swagger v2 specification to achieve arbitrary code execution in the environment that generates and imports the client. A double-quote character in a header parameter name is written unescaped into the generated request-validation zod.object({...}) schema, so a crafted spec breaks out of the string literal and injects JavaScript that runs the moment the generated zod module is imported — impacting developer workstations, CI runners, test harnesses, and any application that loads the generated code. …
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Recommended ActionAI
Within 24 hours, inventory all development systems, CI/CD runners, and applications using Orval and determine which versions are deployed; immediately restrict use of untrusted or externally-sourced OpenAPI/Swagger specifications until patching is complete. …
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Same weakness CWE-94 – Code Injection
View allSame technique Code Injection
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-62602