CVE-2026-28367

8.7 HIGH

A flaw was found in Undertow

Published: 2026-03-27 · Last updated: 2026-06-10

Severity and scoring

CVSS: 8.7 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE: CWE-444

Affected products

Vendor	Product
redhat	build_of_apache_camel_-_hawtio, build_of_apache_camel_for_spring_boot, data_grid

Description

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-28367
[Other]https://access.redhat.com/errata/RHSA-2026:25125
[Other]https://access.redhat.com/errata/RHSA-2026:25126
[Vendor advisory]https://access.redhat.com/security/cve/CVE-2026-28367
[Vendor advisory]https://bugzilla.redhat.com/show_bug.cgi?id=2443260

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