p PatchFirst

CVE-2026-102479

CVE-2026-102479

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In Eclipse Vert.x versions [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x HTTP/1.x decoder uses a canonicalization for well known HTTP headers, the canonicalization process interprets well crafted headers as headers of this list, allowing for instance Content-Xength to be interpeted as Content-Length. This can be exploited for request smuggling purpose. The impacted component is io.vertx:vertx-core.

CVSS 8.7 · High · EPSS 0.3%

Published
Updated

Affected products and versions

  • eclipse vert.x

    Versions
    • ≥ 5.0.0, ≤ 5.0.12: Affected (semver)
    • ≥ 5.1.0, ≤ 5.1.9: Affected (semver)
    • 5.2.0: Affected (semver)

    No fix published

Original sources

Check your server →