# i18next-http-middleware (npm) vulnerabilities

4 known vulnerabilities (1 critical, 3 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Weekly downloads: 398.1K
- Registry: https://www.npmjs.com/package/i18next-http-middleware

## Advisories (4)

### [CVE-2026-48714](https://cve.now/CVE-2026-48714): i18next-http-middleware missingKeyHandler does not reject keys whose segments contain prototype-polluting names

- Severity: Critical 9.1
- Published: Jun 15, 2026
- Affected: fixed in 3.9.7.

### [CVE-2026-42353](https://cve.now/CVE-2026-42353): Path traversal / SSRF in i18next-http-middleware via user-controlled language and namespace parameters

- Severity: High 8.2
- Published: May 8, 2026
- Affected: fixed in 3.9.3.

### [CVE-2026-41683](https://cve.now/CVE-2026-41683): HTTP response splitting and DoS in i18next-http-middleware via unsanitised Content-Language header

- Severity: High 8.6
- Published: May 8, 2026
- Affected: fixed in 3.9.3.

### [CVE-2026-41690](https://cve.now/CVE-2026-41690): Prototype pollution and path traversal in i18next-http-middleware via user-controlled language and namespace parameters

- Severity: High 8.6
- Published: May 8, 2026
- Affected: fixed in 3.9.3.

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