RCE in Orval-Labs Orval
CVE-2026-96755
orval versions 8.14.0 through 8.28.1 contain a code injection vulnerability in the @orval/effect generator that converts OpenAPI schema defaults into template literals. Attackers can inject arbitrary JavaScript expressions via schema defaults containing ${...} syntax, which are executed at module scope when the generated code is built or imported.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.004
Affected products
Weakness classification (CWE)
References
- github.com/orval-labs/orval/security/advisories/GHSA-q7f2-jg6j-r867 (vendor-advisory)
- github.com/orval-labs/orval/pull/3995 (issue-tracking, patch)
- github.com/orval-labs/orval/commit/d346d94a660e50a2f8d0f7c17fee2c4c69d8dc23 (patch)
- github.com/orval-labs/orval/blob/v8.28.1/packages/effect/src/index.ts (technical-description)
- github.com/orval-labs/orval (product)
- www.vulncheck.com/advisories/orval-orval-effect-8.14.0-through-8.28.1-code-inje… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-96755?
- CVE-2026-96755 is a critical-severity vulnerability in Orval-Labs Orval, classified under Code Injection. CVSS score: 9.8/10. Published 2026-09-23.
- How severe is CVE-2026-96755?
- Critical severity. CVSS v3 base score is 9.8 out of 10.