CVE-2026-71871: CWE-94: Improper Control of Generation of Code ('Code Injection') in orval-labs orval
CVE-2026-71871 is a critical code injection vulnerability in orval-labs' orval tool prior to version 8.21.0. The issue arises from unsafe encoding of ${...} expressions or backticks in header parameter defaults, which are emitted into module-level template literals during zod schema generation. This flaw allows attacker-controlled JavaScript to be executed when the generated zod schema module is imported, potentially leading to code execution in developer, CI, test, or application environments. The vulnerability is fixed in orval version 8.21.0.
AI Analysis
Technical Summary
Orval is a tool that generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Before version 8.21.0, the function formatDefaultValue in packages/zod/src/index.ts improperly handles ${...} expressions or backticks in header parameter defaults by embedding them directly into module-level template literals without safe encoding. This improper control of code generation (CWE-94) permits injection and execution of attacker-controlled JavaScript code when the generated zod schema module is imported. This vulnerability has a CVSS 4.0 score of 9.3, indicating critical severity. The issue is resolved in version 8.21.0 of orval.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript code in the context of the developer, continuous integration, testing, or application environment where the generated zod schema module is imported. This can lead to full code execution, potentially compromising the affected environment.
Mitigation Recommendations
Upgrade orval to version 8.21.0 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor stating the issue is resolved in 8.21.0. No other mitigation is indicated.
CVE-2026-71871: CWE-94: Improper Control of Generation of Code ('Code Injection') in orval-labs orval
Description
CVE-2026-71871 is a critical code injection vulnerability in orval-labs' orval tool prior to version 8.21.0. The issue arises from unsafe encoding of ${...} expressions or backticks in header parameter defaults, which are emitted into module-level template literals during zod schema generation. This flaw allows attacker-controlled JavaScript to be executed when the generated zod schema module is imported, potentially leading to code execution in developer, CI, test, or application environments. The vulnerability is fixed in orval version 8.21.0.
CVSS v4.0
Score 9.3critical
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Orval is a tool that generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Before version 8.21.0, the function formatDefaultValue in packages/zod/src/index.ts improperly handles ${...} expressions or backticks in header parameter defaults by embedding them directly into module-level template literals without safe encoding. This improper control of code generation (CWE-94) permits injection and execution of attacker-controlled JavaScript code when the generated zod schema module is imported. This vulnerability has a CVSS 4.0 score of 9.3, indicating critical severity. The issue is resolved in version 8.21.0 of orval.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript code in the context of the developer, continuous integration, testing, or application environment where the generated zod schema module is imported. This can lead to full code execution, potentially compromising the affected environment.
Mitigation Recommendations
Upgrade orval to version 8.21.0 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor stating the issue is resolved in 8.21.0. No other mitigation is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-07T18:26:53.524Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a85eb31acd9273b49667250
Added to database: 08/19/2026, 17:43:13 UTC
Last enriched: 08/19/2026, 17:52:46 UTC
Last updated: 08/19/2026, 22:12:03 UTC
Views: 6
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