CVE-2026-118258
CVE-2026-118258 · i18next-http-backend: Query-parameter injection through & and = in lng when loadPath/addPath puts {{lng}} in the query string
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 without rejecting ampersand (&), equals (=), or semicolon (;) query separators. When a template places lng or ns in the query string and an attacker controls that value, the attacker can add or override parameters on browser or server-side translation requests, potentially exposing other namespaces or tenants or changing backend behavior through the application's network position and credentials. This vulnerability is the result of an incomplete fix for CVE-2026-41691. This issue is fixed in version 4.0.4.
CVSS 3.7 · Low · EPSS 0.3% · Public exploit · Fix available
- Published
- Updated
Stack: node
Affected products and versions
i18next-http-backend
- Versions
- < 4.0.4: Affected
No fix published
i18next-http-backend npm
- Affected ranges
- SEMVER: < 4.0.4
Update to 4.0.4