PT-2026-90548

Summary The published fix for GHSA-v6ph-xcq9-qxxj / CVE-2026-39885 added a direct hostname denylist for OpenAPI external $ref dereferencing, but the latest patched dependency mcp-from-openapi 2.3.0 still makes backend-origin requests to loopback when the target is reached through hostname...

CVE-2026-23947-PoC

Walkthrough: CVE-2026-23947 - Ejecución de Código Arbitrario en Orval Este walkthrough demuestra cómo una especificación OpenAPI no confiable puede explotar Orval para inyectar código arbitrario en los clientes generados mediante los campos x-enumDescriptions y x-enumNames. Requisitos previos...

CVE-2026-77354

A flaw was found in kin-openapi, a Go project for handling OpenAPI files. An unauthenticated client can exploit this vulnerability by sending a specially crafted query with a large index in a deepObject query parameter. This forces the application to allocate multi-gigabyte memory, leading to an...

CVE-2026-22785

Tutorial de reproducción de CVE-2026-22785 Resumen de la vulnerabilidad CVE : CVE-2026-22785 Impacto : orval = 7.18.0 CVSS : 9.3 CRÍTICO Tipo : Inyección de código Principio de la vulnerabilidad orval 7.18.0, al generar código de servidor MCP, concatena directamente el campo summary de la...

CVE-2026-33331

CVE-2026-33331 — XSS almacenado en el plugin de referencia OpenAPI de oRPC Laboratorio de prueba de concepto para XSS almacenado en la generación de documentación OpenAPI de orpc Propósito oRPC construye páginas de documentación de API a partir de una especificación OpenAPI. Antes de la v1.13.9,...

CVE-2026-53639

Sylius is an Open Source eCommerce Framework on Symfony. Starting in version 2.0.0 and prior to version 2.0.18, 2.1.15, and 2.2.6, the GET /api/v2/shop/payment-requests/hash and PUT /api/v2/shop/payment-requests/hash endpoints look up the payment request solely by the hash from the URL. No...

CVE-2026-76905

A flaw was found in kin-openapi, a Go project for handling OpenAPI files. An unauthenticated client can exploit this vulnerability by sending a malformed non-string scalar field in a multipart/form-data request body. This can cause applications that render validation errors through specific...

CVE-2026-73502

A flaw was found in kin-openapi. An unauthenticated remote attacker can trigger a null-pointer dereference in the openapi3filter.ValidateRequest function. This occurs when validating a request against a content parameter whose application/json media type has no schema. Successful exploitation lea...

CVE-2026-72923

In Microsoft.OpenApi.YamlReader from 2.0.0-preview.11 until 2.12.0 and from 3.0.0 until 3.10.0, and in Microsoft.OpenApi.Readers prior to 1.6.30, a small YAML OpenAPI document containing nested anchors and aliases can cause uncontrolled resource consumption when parsed through the public YAML...

CVE-2026-72923

Microsoft.OpenApi.YamlReader (versions 2.0.0-preview.11 through 2.12.0 and 3.0.0 through 3.10.0) and Microsoft.OpenApi.Readers (prior to 1.6.30) are vulnerable to a denial of service via YAML alias expansion. The root cause lies in how SharpYaml represents aliases as shared nodes in a directed ac...

CVE-2026-71203-PoC

CVE-2026-71203 — changedetection.io: Falta de autenticación en /api/v1/full-spec revela el esquema OpenAPI completo Producto: dgtlmoon/changedetection.io — v0.55.7 Archivo: changedetectionio/api/Spec.py CWE: CWE-306 — Autenticación faltante para función crítica CVSS 3.1:...

EUVD-2026-62599

Orval: RCE via OpenAPI path - unescaped request-URL template literal backtick breakout...

Orval: RCE via OpenAPI path -> unescaped request-URL template literal (backtick breakout)

Summary Orval emits the OpenAPI path into the generated request URL as a TEMPLATE LITERAL /users/... without escaping the backtick character. A path containing a backtick closes the template literal and injects a concatenation expression that is evaluated when the generated URL/request/key functi...

Orval: RCE via servers[].url -> unescaped request-URL template literal (with getBaseUrlFromSpecification)

Summary When Orval is configured with output.baseUrl.getBaseUrlFromSpecification: true, it bakes the spec's servers0.url into the generated request URL as a template literal without escaping the backtick. A server URL containing a backtick closes the template literal and injects a concatenation...

Orval: Import-time RCE via schema default -> zod module-level template literal

Summary Orval's zod schema generation emits a schema's default value as a module-level template literal export const …Default = ; without escaping $ or the backtick. A default of the form v$w injects a live JavaScript expression that is evaluated when the generated zod schema module is imported,...

EUVD-2026-62605

Orval: Import-time RCE via enum-typed default - zod module-level template literal...

io.javalin.community.openapi:javalin-redoc-plugin (>=5.0.0, <=5.2.0), io.javalin.community.openapi:openapi-test (>=5.0.0, <=5.0.1) +41 more potentially affected by CVE-2026-84375 via org.webjars.npm:js-yaml (>=3.1.0, <=4.3.1)

org.webjars.npm:js-yaml MAVEN version =3.1.0, =5.0.0, =5.0.0, =9.0.6, =2.0.0, =2.1.3, =0.1.3, =1.1.4, =2.1.0, =4.0.3 and more Source cves: CVE-2026-84375 Source advisory: SNYK:JAVA-ORGWEBJARSNPM-19496769...

CVE-2026-53508

oasdiff is a command-line and Go package that compares and detects breaking changes in OpenAPI specs. From version 1.13.2 through version 1.18.0, oasdiff did not enforce --allow-external-refs=false library: openapi3.Loader.IsExternalRefsAllowed = false when loading a spec from a git revision the...

CVE-2026-53507 oasdiff actions resolve external $refs by default, enabling SSRF and disclosure of structured files on pull-request runs

oasdiff-action is a GitHub Action that detects breaking changes in OpenAPI specs and post a review on every pull request. Before version 0.0.51, the oasdiff actions resolved external $refs in the OpenAPI spec by default allow-external-refs: true. When an action runs on a pull request whose spec i...

CVE-2026-53507 oasdiff actions resolve external $refs by default, enabling SSRF and disclosure of structured files on pull-request runs

oasdiff-action is a GitHub Action that detects breaking changes in OpenAPI specs and post a review on every pull request. Before version 0.0.51, the oasdiff actions resolved external $refs in the OpenAPI spec by default allow-external-refs: true. When an action runs on a pull request whose spec i...