CVE-2026-55451 gettext-converter: Prototype pollution in js2i18next() via crafted translation keys

gettext-converter provides gettext resource conversion utilities for JavaScript. Prior to 1.3.3, js2i18next in lib/js2i18next.js splits nested translation keys using options.keyseparator, whose default value consists of two number signs, and uses each segment as a dynamic object key without...

CVE-2026-48713 i18next-fs-backend: Prototype pollution via crafted missing-key string

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...

CVE-2026-48713: Improperly Controlled Modification of Object Prototype Attributes

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...