CVE-2026-28367
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Undertow: undertow: request smuggling via `\r\r\r` as a header block terminator
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Red Hat JBoss Enterprise Application Platform 8.1.6
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1.6
- Platforms
- Unknown
- Default status
affected- Package
- io.undertow/undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.3.24.SP2-redhat-00001 | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Platforms
- Unknown
- Default status
affected- Package
- eap8-activemq-artemis
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:2.40.0-7.redhat_00015.1.el8eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Platforms
- Unknown
- Default status
affected- Package
- eap8-eap-product-conf-parent
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:801.6.1-1.GA_redhat_00001.1.el8eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Platforms
- Unknown
- Default status
affected- Package
- eap8-undertow
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:2.3.24-3.SP2_redhat_00001.1.el8eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Platforms
- Unknown
- Default status
affected- Package
- eap8-wildfly
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:8.1.6-7.GA_redhat_00010.1.el8eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Platforms
- Unknown
- Default status
affected- Package
- eap8-activemq-artemis
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:2.40.0-7.redhat_00015.1.el9eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Platforms
- Unknown
- Default status
affected- Package
- eap8-eap-product-conf-parent
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:801.6.1-1.GA_redhat_00001.1.el9eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Platforms
- Unknown
- Default status
affected- Package
- eap8-undertow
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:2.3.24-3.SP2_redhat_00001.1.el9eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Platforms
- Unknown
- Default status
affected- Package
- eap8-wildfly
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0:8.1.6-7.GA_redhat_00010.1.el9eap | unaffected | rpm | * | Unavailable | None listed |
Red Hat build of Apache Camel for Spring Boot 4
- Vendor
- Red Hat
- Product
- Red Hat build of Apache Camel for Spring Boot 4
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat build of Apache Camel - HawtIO 4
- Vendor
- Red Hat
- Product
- Red Hat build of Apache Camel - HawtIO 4
- Platforms
- Unknown
- Default status
unaffected- Package
- undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Data Grid 8
- Vendor
- Red Hat
- Product
- Red Hat Data Grid 8
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 10
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 10
- Platforms
- Unknown
- Default status
unaffected- Package
- moditect
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 8
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 8
- Platforms
- Unknown
- Default status
unaffected- Package
- pki-core:10.6/resteasy
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 8
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 8
- Platforms
- Unknown
- Default status
unaffected- Package
- pki-deps:10.6/resteasy
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Enterprise Linux 9
- Vendor
- Red Hat
- Product
- Red Hat Enterprise Linux 9
- Platforms
- Unknown
- Default status
unaffected- Package
- resteasy
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Fuse 7
- Vendor
- Red Hat
- Product
- Red Hat Fuse 7
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform 7
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 7
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8
- Platforms
- Unknown
- Default status
affected- Package
- org.jberet-jberet-parent
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform 8
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform 8
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform Expansion Pack
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Platforms
- Unknown
- Default status
affected- Package
- org.jberet-jberet-parent
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform Expansion Pack
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Platforms
- Unknown
- Default status
affected- Package
- org.jboss.eap-jboss-eap-xp
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat JBoss Enterprise Application Platform Expansion Pack
- Vendor
- Red Hat
- Product
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Platforms
- Unknown
- Default status
unaffected- Package
- undertow-core
- Package collection
- https://access.redhat.com/jbossnetwork/restricted/listSoftware.html
No explicit version tuples; consult this entry's default status.
Red Hat Process Automation 7
- Vendor
- Red Hat
- Product
- Red Hat Process Automation 7
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
Red Hat Single Sign-On 7
- Vendor
- Red Hat
- Product
- Red Hat Single Sign-On 7
- Platforms
- Unknown
- Default status
affected- Package
- undertow-core
- Package collection
- https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.