orval-labs orval up to 7.20.x/8.1.x Incomplete Fix CVE-2026-23947 jsStringEscape code injection

Summaryinfo

A vulnerability categorized as critical has been discovered in orval-labs orval up to 7.20.x/8.1.x. This affects the function jsStringEscape of the component Incomplete Fix CVE-2026-23947. The manipulation results in code injection. This vulnerability is cataloged as CVE-2026-25141. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in orval-labs orval up to 7.20.x/8.1.x. It has been classified as critical. Affected is the function jsStringEscape of the component Incomplete Fix CVE-2026-23947. 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 JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions starting with 7.19.0 and prior to 7.21.0 and 8.2.0 have an incomplete fix for CVE-2026-23947. While the jsStringEscape function properly handles single quotes ('), double quotes (") and so on, it is still possible to achieve code injection using only a limited set of characters that are currently not escaped. The vulnerability lies in the fact that the application can be forced to execute arbitrary JavaScript using characters such as []()!+. By using a technique known as JSFuck, an attacker can bypass the current sanitization logic and run arbitrary code without needing any alphanumeric characters or quotes. Version 7.21.0 and 8.2.0 contain an updated fix.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-25141 since 01/29/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 7.21.0 or 8.2.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5007). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• orval-labs

Name

• orval

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.9
• 7.10
• 7.11
• 7.12
• 7.13
• 7.14
• 7.15
• 7.16
• 7.17
• 7.18
• 7.19
• 7.20
• 8.0
• 8.1

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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