CVE-2026-28367
criticalA flaw was found in Undertow.
Vendor / product: Redhat — build of apache camel - hawtio
A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending `\r\r\r` as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer, potentially leading to unauthorized access or manipulation of web requests.
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 00:10
NVD status: Modified
Last synced 2 days 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
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-2026-28367
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2443260
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-2026-28367 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2443260 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗