{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-48714/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-15T20:41:49.382Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-48714","@id":"https://www.cve.org/CVERecord?id=CVE-2026-48714","description":"i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. In versions prior to 3.9.7, the missingKeyHandler blocked the literal request-body keys __proto__, constructor, and prototype (added in 3.9.3, see GHSA-5fgg-jcpf-8jjw), but did not reject dotted variants such as \"__proto__.polluted\". Downstream backends that split the missing-key string on a configured keySeparator (notably i18next-fs-backend ≤ 2.6.5) hand these keys to an un"},"products":[{"@id":"cpe:2.3:a:i18next:i18next-http-middleware:\\<_3.9.7:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:i18next:i18next-http-middleware:\\<_3.9.7:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-15T20:41:49.382Z"}]}