CVE-2026-96759

EUVD-2026-85409
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.
Code Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
orvalorval
𝑥
< 8.29.0
CNA
Common Weakness Enumeration
References
https://github.com/orval-labs/orval
https://github.com/orval-labs/orval/blob/v8.28.1/packages/query/src/query-generator.ts#L784
https://github.com/orval-labs/orval/commit/b28c53f3e0c06190e0f6ea136737e6316432448f
https://github.com/orval-labs/orval/pull/4008
https://github.com/orval-labs/orval/security/advisories/GHSA-vv88-cm6j-665j
https://www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-operationid