Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Apache Camel - Hawtio | 4.0 |
| Redhat | Build Of Apache Camel For Spring Boot | 4.0 |
| Redhat | Data Grid | 8.0 |
| Redhat | Fuse | 7.0.0 |
| Redhat | Jboss Enterprise Application Platform | 7.0.0 |
| Redhat | Jboss Enterprise Application Platform Expansion Pack | - |
| Redhat | Process Automation | 7.0 |
| Redhat | Single Sign-On | 7.0 |
| Redhat | Undertow | - |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2026-28367Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2443260Issue TrackingVendor Advisory
FAQ
What is CVE-2026-28367?
CVE-2026-28367 is a vulnerability with a CVSS score of 8.7 (HIGH). 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...
How severe is CVE-2026-28367?
CVE-2026-28367 has been rated HIGH with a CVSS base score of 8.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28367?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Build Of Apache Camel - Hawtio, Redhat Build Of Apache Camel For Spring Boot, Redhat Data Grid, Redhat Fuse, Redhat Jboss Enterprise Application Platform.