CVE-2026-28368 — Undertow: undertow: request smuggling via inconsistent header parsing
A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared …
Published: 2026-03-27 · CVSS: 8.7 · CVSS 3.1
A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7