CVE-2026-96759

critical · 9.3

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.

9.3

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-09-23

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-94

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-96759