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NVD Vulnerability Details :
CVE-2026-23947
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-20 Jan, 2026 | 01:15
Updated At-27 Feb, 2026 | 19:05

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.09.3CRITICAL
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
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 4.0
Base score: 9.3
Base severity: CRITICAL
Vector:
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
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches
orval
orval
>>orval>>Versions before 7.19.0(exclusive)
cpe:2.3:a:orval:orval:*:*:*:*:*:*:*:*
orval
orval
>>orval>>Versions from 8.0.0(inclusive) to 8.0.2(exclusive)
cpe:2.3:a:orval:orval:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-77Secondarysecurity-advisories@github.com
CWE-94Primarynvd@nist.gov
CWE ID: CWE-77
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-94
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/orval-labs/orval/releases/tag/v8.0.2security-advisories@github.com
Product
Release Notes
https://github.com/orval-labs/orval/security/advisories/GHSA-h526-wf6g-67jvsecurity-advisories@github.com
Vendor Advisory
Hyperlink: https://github.com/orval-labs/orval/releases/tag/v8.0.2
Source: security-advisories@github.com
Resource:
Product
Release Notes
Hyperlink: https://github.com/orval-labs/orval/security/advisories/GHSA-h526-wf6g-67jv
Source: security-advisories@github.com
Resource:
Vendor Advisory
Change History
0Changes found
Details not found