CVE-2026-28368
A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks, potentially bypassing security controls and accessing unauthorized resources.
- CVSS 3.1
- 9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-25)
- CWE
- CWE-444
- Published
- Modified
- Record from
- the NVD, synced
Affected
- redhat:build_of_apache_camel_-_hawtio
- redhat:build_of_apache_camel_for_spring_boot
- redhat:data_grid
- redhat:enterprise_linux
- redhat:fuse
- redhat:jboss_enterprise_application_platform
- redhat:jboss_enterprise_application_platform_expansion_pack
- redhat:process_automation
- redhat:single_sign-on
- redhat:undertow
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8v4x-mgvp-p658 | Maven | io.undertow:undertow-parent | <=2.3.23.Final | no fix published |