CVE-2026-28369
criticalA flaw was found in Undertow.
Vendor / product: Redhat — build of apache camel - hawtio
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
9.1
9.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-03-27 17:16
Modified: 2026-10-26 21:10
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
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, 8.0.0
redhat / jboss_enterprise_application_platform_expansion_pack all versions
redhat / process_automation 7.0
redhat / single_sign-on 7.0
redhat / undertow all versions
redhat / enterprise_linux 9.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-28369
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2443262
References
- https://access.redhat.com/errata/RHSA-2026:25125 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2026:25126 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-28369 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2443262 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗