Description
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.
References7
- github.com/orval-labs/orval
- github.com/orval-labs/orval/blob/v8.28.1/packages/query/src/que…
- github.com/orval-labs/orval/commit/b28c53f3e0c06190e0f6ea136737…
- github.com/orval-labs/orval/pull/4008
- github.com/orval-labs/orval/security/advisories/GHSA-vv88-cm6j-…
- www.vulncheck.com/advisories/orval-before-8.29.0-code-injection…
- github.com/orval-labs/orval/security/advisories/GHSA-vv88-cm6j-…
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
9.3
CRITICAL
Score source: CNA
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 - EPSS — exploit probability
- 1% percentile: 46 · as of 9 November 2026
- CWE
- CWE-94
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.