CVE-2026-96757: Orval-Labs Orval

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.

Affected products

• Orval-Labs Orval: from 6.7.1, before 8.29.0 (fixed in 8.29.0)

Published 2026-09-23. Last modified 2026-09-23.