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CVE-2026-23947

Orval command injection

9.8 CRITICALEPSS 0.84%
  1. Published20 Jan 2026

Description

Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions prior to 7.19.0 until 8.0.2 are vulnerable to arbitrary code execution in environments consuming generated clients. This issue is similar in nature to CVE-2026-22785, but affects a different code path in @orval/core that was not addressed by CVE-2026-22785's fix. The vulnerability allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript code into generated clients via the x-enumDescriptions field, which is embedded without proper escaping in getEnumImplementation(). I have confirmed that the injection occurs during const enum generation and results in executable code within the generated schema files. Orval 7.19.0 and 8.0.2 contain a fix for the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Orval≥ 8.0.0 < 8.0.2 · < 7.19.0

Remediation

Fixed in
Orval≥ 8.0.2

References

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Frequently asked

Is CVE-2026-23947 being actively exploited?

CVE-2026-23947 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.84%.

How severe is CVE-2026-23947?

CVE-2026-23947 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.84% probability of exploitation.

Which products are affected by CVE-2026-23947?

Affected products include Orval.

How do I fix CVE-2026-23947?

Upgrade affected software to a fixed version, for example Orval 8.0.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-23947 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.