CVE-2026-28369
A flaw was found in Undertow.
Published Mar 27, 2026 · updated Oct 14, 2026 · redhat build of apache camel - hawtio
A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform request smuggling. Request smuggling allows an attacker to bypass security mechanisms, access restricted information, or manipulate web caches, potentially leading to unauthorized actions or data exposure.
Timeline
Detection, updates, and resolution for this record.
Mar 27, 2026 · NIST NVD
Detected
A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform request smuggling. Request smuggling allows an attacker to bypass security mechanisms, access restricted
Oct 14, 2026 · NIST NVD
Updated
A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform request smuggling. Request smuggling allows an attacker to bypass security mechanisms, access restricted
Affected
- cpe redhat/build of apache camel - hawtio4.0
- cpe redhat/build of apache camel for spring boot4.0
- cpe redhat/data grid8.0
- cpe redhat/fuse7.0.0
- cpe redhat/jboss enterprise application platform7.0.0
- cpe redhat/jboss enterprise application platform8.0.0
- cpe redhat/jboss enterprise application platform expansion packversion unspecified
- cpe redhat/process automation7.0
Sources
- CVE.orgCVE-2026-28369
Official CVE identifier
cve.org - FIRST EPSSCVE-2026-28369
30-day exploitation probability 0.9%
first.org - NIST NVDCVE-2026-28369
A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote atta
nvd.nist.gov