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Vulnerabilities

Vulnerability · CVE-2026-23947

Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification.

Published Jan 20, 2026 · catalog updated Jan 21, 2026 · Orval generates type-safe JS

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-23947. EPSS is 0.84%. Act only if a listed version of Orval generates type-safe JS is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Orval generates type-safe JS).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.84%
Remediation
Version ranges on file
Affected products
vendor orval-labs orval 8.0.0-rc.0, < 8.0.2

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 getEnumImplemen

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor orval-labs orval 8.0.0-rc.0, < 8.0.28.0.0-rc.0, < 8.0.2

How to fix CVE-2026-23947

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-23947. EPSS is 0.84%. Act only if a listed version of Orval generates type-safe JS is installed.

Which versions are affected?

Compare what you have installed with orval-labs orval 8.0.0-rc.0, < 8.0.2 8.0.0-rc.0, < 8.0.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.84%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 20, 2026 · EUVD

    Detected

    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 allo

  2. Jan 21, 2026 · EUVD

    Updated

    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 allo

Sources

  • CVE.orgVulnerability recordCVE-2026-23947

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-23947

    30-day exploitation probability 0.84%

    first.org
  • EUVDVulnerability recordEUVD-2026-3590

    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,

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • FIRST EPSSNov 4, 2026
  • EUVDNov 4, 2026