Vulnerability details
CVE-2026-28368
Red Hat Data Grid 8Red Hat Enterprise Linux 9Red Hat Fuse 7Red Hat JBoss Enterprise Application Platform 7Red Hat JBoss Enterprise Application Platform 8Red Hat JBoss Enterprise Application Platform Expansion Pack
Undertow: undertow: request smuggling via inconsistent header parsing
CVSS 3.1
8.7High
Official description
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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Red Hat | Red Hat Data Grid 8 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 9 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Fuse 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Process Automation 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Single Sign-On 7 | All | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat build of Apache Camel for Spring Boot 4 | All | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://access.redhat.com/errata/RHSA-2026:25125 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:25126 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-28368 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2443261 issue-trackingx_refsource_REDHAT
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Details
- Published
- 2026-03-27
- Last updated
- 2026-11-05
- State
- Published
- Assigner (CNA)
- redhat
Exploit prediction (EPSS)
0.73%
Probability of exploitation in 30 days
54.4%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-444Inconsistent Interpretation of HTTP Requests