GHSA-2933-Q333-QG83 i18next-fs-backend vulnerable to prototype pollution via crafted missing-key string

Impact i18next-fs-backend ≤ 2.6.5, when used to persist missing translation keys e.g. via i18next-http-middleware's missingKeyHandler exposed to untrusted input, is vulnerable to prototype pollution via crafted missing-key strings. Backend.writeFile splits each queued missing-key string on the...