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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-28367

Undertow: undertow: request smuggling via `\r\r\r` as a header block terminator

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6

Default version status: affected

  • 2.3.24.SP2-redhat-00001 to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Default version status: affected

  • 0:2.40.0-7.redhat_00015.1.el8eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Default version status: affected

  • 0:801.6.1-1.GA_redhat_00001.1.el8eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Default version status: affected

  • 0:2.3.24-3.SP2_redhat_00001.1.el8eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8

Default version status: affected

  • 0:8.1.6-7.GA_redhat_00010.1.el8eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Default version status: affected

  • 0:2.40.0-7.redhat_00015.1.el9eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Default version status: affected

  • 0:801.6.1-1.GA_redhat_00001.1.el9eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Default version status: affected

  • 0:2.3.24-3.SP2_redhat_00001.1.el9eap to < *unaffected

Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9

Default version status: affected

  • 0:8.1.6-7.GA_redhat_00010.1.el9eap to < *unaffected

Red Hat Red Hat build of Apache Camel for Spring Boot 4

Default version status: affected

Red Hat Red Hat build of Apache Camel - HawtIO 4

Default version status: unaffected

Red Hat Red Hat Data Grid 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 10

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: unaffected

Red Hat Red Hat Fuse 7

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform 7

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform 8

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform 8

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Default version status: affected

Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Default version status: unaffected

Red Hat Red Hat Process Automation 7

Default version status: affected

Red Hat Red Hat Single Sign-On 7

Default version status: affected

References