{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-48713/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-15T20:31:53.929Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-48713","@id":"https://www.cve.org/CVERecord?id=CVE-2026-48713","description":"Versions prior to 2.6.6 are vulnerable to prototype pollution via crafted missing-key strings when used to persist missing translation keys (e.g. via i18next-http-middleware's missingKeyHandler exposed to untrusted input). Backend.writeFile() splits each queued missing-key string on the configured keySeparator (default .) before calling the internal setPath() walker. The walker (getLastOfPath in lib/utils.js) did not guard against unsafe segments, so a key like \"__proto__.polluted\" was split int"},"products":[{"@id":"cpe:2.3:a:i18next:i18next-fs-backend:\\<_2.6.6:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:i18next:i18next-fs-backend:\\<_2.6.6:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-15T20:31:53.929Z"}]}