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CVE-2026-23947

Orval MCP client is vulnerable to code injection via unsanitized x-enum-descriptions in enum generation

CVSS 9.3 CRITICALEPSS 0.8%CWE-77
Vexday Risk Score
28Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 9.3EPSS 0.8%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
20 jan 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions prior to 7.19.0 until 8.0.2 are vulnerable to arbitrary code execution in environments consuming generated clients. This issue is similar in nature to CVE-2026-22785, but affects a different code path in @orval/core that was not addressed by CVE-2026-22785's fix. The vulnerability allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript code into generated clients via the x-enumDescriptions field, which is embedded without proper escaping in getEnumImplementation(). I have confirmed that the injection occurs during const enum generation and results in executable code within the generated schema files. Orval 7.19.0 and 8.0.2 contain a fix for the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Produtos afetados
orval-labs · orval