CVE-2026-96757
Severity CVSS v4.0:
CRITICAL
Type:
CWE-94
Code Injection
Publication date:
23/09/2026
Last modified:
23/09/2026
Description
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.
Impact
Base Score 4.0
9.30
Severity 4.0
CRITICAL
Base Score 3.x
9.80
Severity 3.x
CRITICAL
References to Advisories, Solutions, and Tools
- https://github.com/orval-labs/orval
- https://github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584
- https://github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb
- https://github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5
- https://github.com/orval-labs/orval/pull/4007
- https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p
- https://github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j
- https://www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type
- https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p