CVE-2026-28367
HIGH
NVD
CVSS Score
8.7
Severity
HIGH
Published
Mar 27, 2026
Vendor
unknown
Description
A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending `\r\r\r` as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer, potentially leading to unauthorized access or manipulation of web requests.