CVE-2026-28367

HIGH SEVERITY

CVSS Score & Metrics

Base Score

8.7 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

March 27, 2026

Last Modified

March 30, 2026

CWE ID

CWE-444

Source

NVD

External References

https://access.redhat.com/security/cve/CVE-2026-28367
https://bugzilla.redhat.com/show_bug.cgi?id=2443260

CVE-2026-28367

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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