CVE-2026-28368 in Undertow
Summary
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.
Responsible
redhat
Reservation
02/27/2026
Disclosure
03/27/2026
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 353989 | Undertow Requests request smuggling | 444 | Not defined | Not defined | CVE-2026-28368 |