9.1

CVE-2026-28369

Undertow: undertow: request smuggling via malformed http request headers

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Redhat ≫ Data Grid Version 8.0
Redhat ≫ Fuse Version 7.0.0
Redhat ≫ Process Automation Version 7.0
Redhat ≫ Single Sign-on Version 7.0
Redhat ≫ Undertow Version -
Redhat ≫ Enterprise Linux Version 9.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.68% 0.474
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
RedHat 8.7 2.2 5.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

https://bugzilla.redhat.com/show_bug.cgi?id=2443262
Vendor Advisory
Issue Tracking
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