orval before 8.29.0 Code Injection via operationId (CVE-2026-96759) | HOL Guard CVE

Critical · CVSS 9.3CVE-2026-96759

orval before 8.29.0 Code Injection via operationId

Answer in brief

CVE-2026-96759 records a Critical severity (CVSS 9.3) vulnerability in orval before 8.29.0 Code Injection via operationId. The current sources do not mark it as known exploited. The current feed maps orval-labs/orval (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 23, 2026Updated Sep 23, 2026Source checked Sep 23, 2026First seen by HOL Sep 23, 2026Material review Sep 23, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps orval-labs/orval (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
orval-labs/orvalgeneric	>=0 <8.29.0	8.29.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for orval-labs/orval.
Review the reported fix. Update orval-labs/orval to 8.29.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 23, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.