CVE-2026-28369
CRITICAL EPSS 47.6%
Published Mar 27, 20263mo ago · Modified Jun 17, 20261w ago
9.1 CVSS 3.1
Published Mar 27, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
47.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-444
Affected Products 11
| Vendor | Product | Version | Range |
|---|---|---|---|
| redhat | build_of_apache_camel_-_hawtio | 4.0 | any |
| redhat | build_of_apache_camel_for_spring_boot | 4.0 | any |
| redhat | data_grid | 8.0 | any |
| redhat | fuse | 7.0.0 | any |
| redhat | jboss_enterprise_application_platform | 7.0.0 | any |
| redhat | jboss_enterprise_application_platform | 8.0.0 | any |
| redhat | jboss_enterprise_application_platform_expansion_pack | * | any |
| redhat | process_automation | 7.0 | any |
| redhat | single_sign-on | 7.0 | any |
| redhat | undertow | * | any |
| redhat | enterprise_linux | 9.0 | any |
References 4
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:25125
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:25126
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-28369
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2443262
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.