FKIE_CVE-2026-28369

Vulnerability from fkie_nvd - Published: 2026-03-27 17:16 - Updated: 2026-06-17 10:28
Severity
8.7 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:25125
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:25126
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-28369Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2443262Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
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
redhat jboss_enterprise_application_platform 8.0.0
redhat jboss_enterprise_application_platform_expansion_pack -
redhat process_automation 7.0
redhat single_sign-on 7.0
redhat undertow -
redhat enterprise_linux 9.0
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.