Quick answers
- Is CVE-2026-96757 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-96757 being exploited in the wild.
- How severe is CVE-2026-96757?
- Critical severity, with a CVSS score of 9.8, published 23 September 2026.
- Which products and versions are affected?
- Orval Labs Orval before 8.29.0.
- Is there a fix for CVE-2026-96757?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-96757 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-96757?
- Check whether you run Orval Labs Orval at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a code injection flaw in orval's code generation logic. When emitting OpenAPI media-type keys into single-quoted string literals for Content-Type headers, the generator does not escape special characters, allowing an attacker to break out of the string and inject arbitrary JavaScript via crafted media-type keys in a malicious OpenAPI specification. This affects generated fetch operations and mock resolvers; the attack requires the attacker to control the OpenAPI specification file processed by orval.
Affected products
- orval-labs orval before 8.29.0
Timeline
- 2026-09-23: disclosed