{"timestamp":"2026-03-31T13:27:40.351547Z","id":"CVE-2026-28367","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8.1","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"undertow-core","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"eap8-activemq-artemis","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8","cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"],"versions":[{"version":"0:2.40.0-7.redhat_00015.1.el8eap","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"eap8-eap-product-conf-parent","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8","cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"],"versions":[{"version":"0:801.6.1-1.GA_redhat_00001.1.el8eap","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"eap8-undertow","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8","cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"],"versions":[{"version":"0:2.3.24-3.SP2_redhat_00001.1.el8eap","lessThan":"*","versionType":"rpm","status":"unaffected"}]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"eap8-wildfly","cpes":["cpe:/a:redhat:jboss_enterprise_applicati

https://access.redhat.com/errata/RHSA-2026:25125

https://access.redhat.com/errata/RHSA-2026:25126

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

OR
          *cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:undertow:-:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:process_automation:7.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:data_grid:8.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:jboss_enterprise_application_platform_expansion_pack:-:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:jboss_enterprise_application_platform:8.0.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:fuse:7.0.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:build_of_apache_camel_-_hawtio:4.0:*:*:*:*:*:*:*
          *cpe:2.3:a:redhat:build_of_apache_camel_for_spring_boot:4.0:*:*:*:*:*:*:*

Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-28367 Types: Vendor Advisory

Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2443260 Types: Issue Tracking, Vendor Advisory

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.

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

CWE-444

https://access.redhat.com/security/cve/CVE-2026-28367

https://bugzilla.redhat.com/show_bug.cgi?id=2443260