CVE-2026-40887 PoC — @vendure/core has a SQL Injection vulnerability

Title:@vendure/core has a SQL Injection vulnerability (CVE-2026-40887)
Description:Vendure is an open-source headless commerce platform. Starting in version 1.7.4 and prior to versions 2.3.4, 3.5.7, and 3.6.2, an unauthenticated SQL injection vulnerability exists in the Vendure Shop API. A user-controlled query string parameter is interpolated directly into a raw SQL expression without parameterization or validation, allowing an attacker to execute arbitrary SQL against the database. This affects all supported database backends (PostgreSQL, MySQL/MariaDB, SQLite). The Admin API is also affected, though exploitation there requires authentication. Versions 2.3.4, 3.5.7, and 3.6.2 contain a patch. For those who are unable to upgrade immediately, Vendure has made a hotfix available that uses `RequestContextService.getLanguageCode` to validate the `languageCode` input at the boundary. This blocks injection payloads before they can reach any query. The hotfix replaces the existing `getLanguageCode` method in `packages/core/src/service/helpers/request-context/request-context.service.ts`. Invalid values are silently dropped and the channel's default language is used instead. The patched versions additionally convert the vulnerable SQL interpolation to a parameterized query as defense in depth.

Vendure, an open-source headless commerce platform built on Node.js/TypeScript, contains a critical SQL injection vulnerability in its Shop API. The languageCode query parameter is interpolated directly into a raw SQL CASE expression in ProductService.findOneBySlug without parameterization or input validation, allowing unauthenticated attackers to execute arbitrary SQL commands. This can lead to full database disclosure and denial of service.

 id: CVE-2026-40887

info:
  name: Vendure Core - SQL Injection
  author: theamanrawat
  severity: cr

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