RCE in Orval-Labs Orval
CVE-2026-96759
orval before 8.29.0 fails to escape the operationId parameter when emitting it into generated TanStack Query mutator options metadata objects. Attackers can inject arbitrary JavaScript code through a crafted operationId in an OpenAPI specification that executes when generated hooks are called.
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: 0.005 (45.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.5% 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: 0.005 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/orval-labs/orval/security/advisories/GHSA-vv88-cm6j-665j (vendor-advisory)
- github.com/orval-labs/orval/pull/4008 (issue-tracking, patch)
- github.com/orval-labs/orval/commit/b28c53f3e0c06190e0f6ea136737e6316432448f (patch)
- github.com/orval-labs/orval/blob/v8.28.1/packages/query/src/query-generator.ts (technical-description)
- github.com/orval-labs/orval (product)
- www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-operationid (third-party-advisory)
Frequently asked questions
- What is CVE-2026-96759?
- CVE-2026-96759 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-2026-96759?
- Critical severity. CVSS v3 base score is 9.8 out of 10.