Arbitrary Code Execution

Orval is vulnerable to Arbitrary Code Execution. The vulnerability is due to unsanitized embedding of untrusted OpenAPI fields, where attacker-controlled values in the x-enumDescriptions field are injected without proper escaping during enum generation, resulting in executable JavaScript/TypeScri...

PT-2026-4314

Name of the Vulnerable Software and Affected Versions Orval versions 7.19.0 and below and 8.0.0-rc.0 through 8.0.2 Description Orval generates type-safe JavaScript clients from OpenAPI specifications. The software allows untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript...

Exploit for CVE-2026-23947

Walkthrough: CVE-2026-23947 - Orval Arbitrary Code Execution...

@beshkenadze/orval-mcp (7.11.2-fix.2), @latest-version/orval-angular (7.4.1) +19 more potentially affected by CVE-2026-23947 +1 more via @orval/core (>=7.0.0, <=7.18.0)

@orval/core NPM version =7.0.0, =7.4.1, =7.4.1, =7.4.1, =7.0.0, =7.0.0, =7.0.0, =7.0.0, =7.9.0, =7.0.0, =7.0.0, =7.0.0, =7.18.0 and more Source cves: CVE-2026-23947, CVE-2026-25141 Source advisory: OSV:GHSA-H526-WF6G-67JV...

@orval/angular (>=8.0.0-rc.0, <=8.0.1), @orval/axios (>=8.0.0-rc.0, <=8.0.1) +9 more potentially affected by CVE-2026-23947 +1 more via @orval/core (>=8.0.0, <=8.0.1)

@orval/core NPM version =8.0.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.6, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.1 Source cves: CVE-2026-23947, CVE-2026-25141 Source advisory: OSV:GHSA-H526-WF6G-67JV...

EUVD-2026-3590

Orval has a code injection via unsanitized x-enum-descriptions in enum generation...

Orval has a code injection via unsanitized x-enum-descriptions in enum generation

Impact Arbitrary code execution in environments consuming generated clients This issue is similar in nature to the recently-patched MCP vulnerability CVE-2026-22785, but affects a different code path in @orval/core that was not addressed by that fix. The vulnerability allows untrusted OpenAPI...

GHSA-H526-WF6G-67JV Orval has a code injection via unsanitized x-enum-descriptions in enum generation

Impact Arbitrary code execution in environments consuming generated clients This issue is similar in nature to the recently-patched MCP vulnerability CVE-2026-22785, but affects a different code path in @orval/core that was not addressed by that fix. The vulnerability allows untrusted OpenAPI...

CVE-2026-23947

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...

PT-2026-5442

Name of the Vulnerable Software and Affected Versions Orval versions 7.19.0 through 7.20.9 Orval versions 8.0.0 through 8.1.9 Description Orval, a tool that generates type-safe JavaScript clients from OpenAPI specifications, is affected by a code injection issue. The jsStringEscape function does...

@orval/angular (>=8.0.0-rc.0, <=8.0.1), @orval/axios (>=8.0.0-rc.0, <=8.0.1) +9 more potentially affected by CVE-2026-23947 via @orval/core (>=8.0.0, <=8.0.1)

@orval/core NPM version =8.0.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.6, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.0-rc.0, =8.0.1 Source cves: CVE-2026-23947 Source advisory: SNYK:JS-ORVALCORE-15038726...

@beshkenadze/orval-mcp (7.11.2-fix.2), @orval/angular (>=7.10.0, <=7.18.0) +11 more potentially affected by CVE-2026-23947 via @orval/core (>=7.10.0, <=7.18.0)

@orval/core NPM version =7.10.0, =7.10.0, =7.10.0, =7.10.0, =7.10.0, =7.10.0, =7.10.0, =7.10.0, =7.10.0, =7.10.0, =1.0.1, =7.10.0, =7.10.0, =7.13.2 Source cves: CVE-2026-23947 Source advisory: SNYK:JS-ORVALCORE-15038726...

Arbitrary Command Injection

Overview Affected versions of this package are vulnerable to Arbitrary Command Injection via the getEnumImplementation function. An attacker can execute arbitrary code in environments that consume generated clients by supplying a crafted OpenAPI specification containing malicious content in the...

CVE-2026-23947

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...

CVE-2026-23947

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...

CVE-2026-23947 Orval MCP client is vulnerable to code injection via unsanitized x-enum-descriptions in enum generation

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...

CVE-2026-23947

CVE-2026-23947 / CVE-2026-25141 affect Orval’s OpenAPI JS client generator. Vulnerable in versions prior to 7.21.0 (and 8.2.0) with incomplete/patchy fixes; an attacker can inject arbitrary code via x-enumDescriptions during const enum generation, leading to code execution in generated clients. T...

CVE-2026-23947 Orval MCP client is vulnerable to code injection via unsanitized x-enum-descriptions in enum generation

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...

CVE-2026-23947 Orval MCP client is vulnerable to code injection via unsanitized x-enum-descriptions in enum generation

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...

CVE-2026-23947: Improper Neutralization of Special Elements used in a Command

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...