Is CVE-2026-42353 actively exploited?

No active exploitation of CVE-2026-42353 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42353 be exploited remotely?

Yes. CVE-2026-42353 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42353?

CVE-2026-42353 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2026-42353

HIGH

CVE-2026-42353

CWE-22Published: May 8, 2026· Updated: May 12, 2026

8.2

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:16.2th

Official Description

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware passes the user-controlled lng and ns values from getResourcesHandler directly into i18next.services.backendConnector.load(languages, namespaces, …) without any sanitization. Depending on which backend is configured, the unvalidated path segments enable either path traversal or SSRF. This issue has been patched in version 3.9.3.

NVD Source

Technical Analysis

CVE-2026-42353 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.2.