CVE-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 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 v3 8.7 HIGH

8.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:25125
https://access.redhat.com/errata/RHSA-2026:25126
https://access.redhat.com/security/cve/CVE-2026-28369	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2443262	Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:redhat:build_of_apache_camel_-_hawtio:4.0:::::::*
	cpe:2.3:a:redhat:build_of_apache_camel_for_spring_boot:4.0:::::::*
	cpe:2.3:a:redhat:data_grid:8.0:::::::*
	cpe:2.3:a:redhat:fuse:7.0.0:::::::*
	cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:::::::*
	cpe:2.3:a:redhat:jboss_enterprise_application_platform:8.0.0:::::::*
	cpe:2.3:a:redhat:jboss_enterprise_application_platform_expansion_pack:-:::::::*
	cpe:2.3:a:redhat:process_automation:7.0:::::::*
	cpe:2.3:a:redhat:single_sign-on:7.0:::::::*
	cpe:2.3:a:redhat:undertow:-:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

History

No history.

Information

Published : 2026-03-27 17:16

Updated : 2026-07-22 06:16

NVD link : CVE-2026-28369

Mitre link : CVE-2026-28369

CVE.ORG link : CVE-2026-28369

JSON object : View

Products Affected

redhat

enterprise_linux
build_of_apache_camel_for_spring_boot
undertow
jboss_enterprise_application_platform
jboss_enterprise_application_platform_expansion_pack
single_sign-on
fuse
build_of_apache_camel_-_hawtio
process_automation
data_grid

CWE

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

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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."}], "lastModified": "2026-07-22T06:16:33.013", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redhat:build_of_apache_camel_-_hawtio:4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "19B253BB-F6CE-400B-87EF-1DF1AFFC2445"}, {"criteria": "cpe:2.3:a:redhat:build_of_apache_camel_for_spring_boot:4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "06A6AC25-2E2D-4359-A806-CC0355513A20"}, {"criteria": "cpe:2.3:a:redhat:data_grid:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7095200A-4DAC-4433-99E8-86CA88E1E4D4"}, {"criteria": "cpe:2.3:a:redhat:fuse:7.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AAD91726-93D9-4230-BF69-6A79B58E09E0"}, {"criteria": "cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "72A54BDA-311C-413B-8E4D-388AD65A170A"}, {"criteria": "cpe:2.3:a:redhat:jboss_enterprise_application_platform:8.0.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D8BC03A-4198-4488-946B-3F6B43962942"}, {"criteria": "cpe:2.3:a:redhat:jboss_enterprise_application_platform_expansion_pack:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A24CBFB-4900-47A5-88D2-A44C929603DC"}, {"criteria": "cpe:2.3:a:redhat:process_automation:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20A6B40D-F991-4712-8E30-5FE008505CB7"}, {"criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890"}, {"criteria": "cpe:2.3:a:redhat:undertow:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8190B427-8350-43AE-8F54-6A40B701C95E"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}