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.
Metrics
Affected Vendors & Products
References
History
Fri, 27 Mar 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Undertow: undertow: request smuggling via `\r\r\r` as a header block terminator | |
| First Time appeared |
Redhat
Redhat apache Camel Hawtio Redhat camel Spring Boot Redhat enterprise Linux Redhat jboss Data Grid Redhat jboss Enterprise Application Platform Redhat jboss Enterprise Bpms Platform Redhat jboss Fuse Redhat jbosseapxp Redhat red Hat Single Sign On |
|
| Weaknesses | CWE-444 | |
| CPEs | cpe:/a:redhat:apache_camel_hawtio:4 cpe:/a:redhat:camel_spring_boot:4 cpe:/a:redhat:jboss_data_grid:8 cpe:/a:redhat:jboss_enterprise_application_platform:7 cpe:/a:redhat:jboss_enterprise_application_platform:8 cpe:/a:redhat:jboss_enterprise_bpms_platform:7 cpe:/a:redhat:jboss_fuse:7 cpe:/a:redhat:jbosseapxp cpe:/a:redhat:red_hat_single_sign_on:7 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat apache Camel Hawtio Redhat camel Spring Boot Redhat enterprise Linux Redhat jboss Data Grid Redhat jboss Enterprise Application Platform Redhat jboss Enterprise Bpms Platform Redhat jboss Fuse Redhat jbosseapxp Redhat red Hat Single Sign On |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-03-27T17:00:45.370Z
Reserved: 2026-02-27T04:42:16.439Z
Link: CVE-2026-28367
No data.
Status : Received
Published: 2026-03-27T17:16:27.750
Modified: 2026-03-27T17:16:27.750
Link: CVE-2026-28367
No data.
OpenCVE Enrichment
No data.