orval-labs Orval up to 8.20.x Header Request-Validation Generation index.ts cross site scripting

Summaryinfo

A vulnerability categorized as problematic has been discovered in orval-labs Orval up to 8.20.x. This issue affects some unknown processing of the file packages/zod/src/index.ts of the component Header Request-Validation Generation. Such manipulation leads to cross site scripting. This vulnerability is traded as CVE-2026-71864. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in orval-labs Orval up to 8.20.x. It has been rated as problematic. Affected by this issue is an unknown functionality of the file packages/zod/src/index.ts of the component Header Request-Validation Generation. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-71864 since 08/07/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 8.21.0 eliminates this vulnerability.

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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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