SEPTEMBER 17, 2026
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Case File

CVE-2026-71871

CRITICAL · CVSS 9.3 EPSS 0.48% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-19 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Orval versions prior to 8.21.0 are vulnerable due to improper encoding of header parameter defaults, allowing attacker-controlled JavaScript to be executed upon importing the generated zod schema module. This critical vulnerability can lead to arbitrary code execution in various environments, including development and CI/CD pipelines. Developers and organizations utilizing Orval for generating TypeScript clients from OpenAPI specifications should prioritize upgrading to version 8.21.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-71871
Severity
CRITICAL
CVSS
9.3
EPSS
0.48%
Java

Original NVD Description

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 a header parameter 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.