orval-labs Orval up to 8.20.x Zod Schema Generation index.ts formatDefaultValue code injection

Summaryinfo

A vulnerability described as critical has been identified in orval-labs Orval up to 8.20.x. This affects the function formatDefaultValue of the file packages/zod/src/index.ts of the component Zod Schema Generation. The manipulation results in code injection. This vulnerability was named CVE-2026-71868. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in orval-labs Orval up to 8.20.x. Affected is the function formatDefaultValue of the file packages/zod/src/index.ts of the component Zod Schema Generation. The manipulation with an unknown input leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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 an enum 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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-71868 since 08/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 8.21.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-62605). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• orval-labs

Name

• Orval

Version

• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5
• 8.6
• 8.7
• 8.8
• 8.9
• 8.10
• 8.11
• 8.12
• 8.13
• 8.14
• 8.15
• 8.16
• 8.17
• 8.18
• 8.19
• 8.20

Website

• Product: https://github.com/orval-labs/orval/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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