orval-labs Orval up to 8.20.x MSW Mock Generation keys.ts getKey encoding error

Summaryinfo

A vulnerability marked as critical has been reported in orval-labs Orval up to 8.20.x. The impacted element is the function getKey of the file packages/core/src/getters/keys.ts of the component MSW Mock Generation. The manipulation leads to encoding error. This vulnerability is uniquely identified as CVE-2026-71867. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in orval-labs Orval up to 8.20.x. This issue affects the function getKey of the file packages/core/src/getters/keys.ts of the component MSW Mock Generation. The manipulation with an unknown input leads to a encoding error vulnerability. Using CWE to declare the problem leads to CWE-172. The product does not properly encode or decode the data, resulting in unexpected values. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Prior to 8.21.0, a single quote in a schema property name is emitted into single-quoted object keys in generated MSW mock factories without safe encoding. This permits attacker-controlled JavaScript to be evaluated when the generated mock factory is called by tests or an MSW handler, resulting in code execution in the developer, CI, test, or application environment. The affected code is packages/core/src/getters/keys.ts function getKey and MSW mock generation. This issue is fixed in version 8.21.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-71867 since 08/07/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 8.21.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-62607). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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