i18next has 3 CVEs on record. 3 were published in the last 90 days. The busiest recent month was October 2026 with 3. The median CVSS is 3.7 (low). Most affected products: i18next-http-backend (2), i18next (1).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 3.7
- Publish → KEV
- —
- Last 90 days
- 3 prev 0
Weakness classes
Products
- i18next-http-backend 2
- i18next 1
Worst active — by depth score
CVE-2026-63402Medium· 5.9i18next: Shared built-in corruption through inherited-key deepExtend recursion45CVE-2026-118258Low· 3.7i18next-http-backend: Query-parameter injection through & and = in lng when loadPath/addPath puts {{lng}} in the query string32CVE-2026-115730Low· 3.1i18next-http-backend 4.0.2 Protocol-Relative URL Injection via Namespace in interpolateUrl29
i18next vulnerabilities
CVEs affecting i18next, newest first. Open any entry for full detail, references, and exploit status.
3 CVEsRSS
CVE-2026-63402Medium· 5.9PoCi18next: Shared built-in corruption through inherited-key deepExtend recursion
i18next is an internationalization framework for JavaScript. Prior to version 26.3.4, `deepExtend` in `src/utils.js` checks property existence with the in operator and recurses into inherited built-ins reached through `Object.prototype`.…
CVE-2026-118258Low· 3.7PoCi18next-http-backend: Query-parameter injection through & and = in lng when loadPath/addPath puts {{lng}} in the query string
i18next-http-backend is a backend layer for i18next that loads translation resources in Node.js, browsers, and Deno. Prior to 4.0.4, interpolateUrl inserts unencoded language and namespace values into loadPath or addPath templates withou…
CVE-2026-115730Low· 3.1PoCi18next-http-backend 4.0.2 Protocol-Relative URL Injection via Namespace in interpolateUrl
i18next-http-backend 4.0.2 contains an incomplete fix in interpolateUrl() that allows attackers to redirect translation requests by supplying an ns value starting with a slash. Attackers controlling the namespace value can form a protoco…