boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-28369CRITICAL
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 — Undertow: undertow: request smuggling via malformed http request headers
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  N    9.1   .0068   49.5     —
AFFECTED
  Product                                                       Versions     Fixed
  Red Hat JBoss Enterprise Application Platform 8.1             unspecified  —
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8  unspecified  0:2.40.0-7.redhat_00015.1.el8eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8  unspecified  0:801.6.1-1.GA_redhat_00001.1.el8eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8  unspecified  0:2.3.24-3.SP2_redhat_00001.1.el8eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8  unspecified  0:8.1.6-7.GA_redhat_00010.1.el8eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9  unspecified  0:2.40.0-7.redhat_00015.1.el9eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9  unspecified  0:801.6.1-1.GA_redhat_00001.1.el9eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9  unspecified  0:2.3.24-3.SP2_redhat_00001.1.el9eap
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9  unspecified  0:8.1.6-7.GA_redhat_00010.1.el9eap
  Red Hat build of Apache Camel for Spring Boot 4               unspecified  —
  + 14 more
TIMELINE
  Feb 27  Reserved by redhat
  Mar 27  Published (CNA: redhat)
  Jul 22  RESCORED — CVE-2026-28369 (Red Hat JBoss Enterprise Application Platform 8.1). CVSS 8.7 → 9.1 (NVD).
CWE-444 · CNA: redhat · CVSS v3.1 · 4 references · NVD status: Modified

Description

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.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
February 27, 2026ReservedReserved by redhat
March 27, 2026PublishedPublished (CNA: redhat)
July 22, 2026RESCOREDRESCORED — CVE-2026-28369 (Red Hat JBoss Enterprise Application Platform 8.1). CVSS 8.7 → 9.1 (NVD).

Affected

Affected products and packages — 24 rows
VendorProduct / PackageEcosystemVersion introducedFixed
Red HatRed Hat JBoss Enterprise Application Platform 8.1———
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8——0:2.40.0-7.redhat_00015.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8——0:801.6.1-1.GA_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8——0:2.3.24-3.SP2_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8——0:8.1.6-7.GA_redhat_00010.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9——0:2.40.0-7.redhat_00015.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9——0:801.6.1-1.GA_redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9——0:2.3.24-3.SP2_redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9——0:8.1.6-7.GA_redhat_00010.1.el9eap
Red HatRed Hat build of Apache Camel for Spring Boot 4———
Red HatRed Hat build of Apache Camel - HawtIO 4———
Red HatRed Hat Data Grid 8———
Red HatRed Hat Enterprise Linux 10———
Red HatRed Hat Enterprise Linux 8———
Red HatRed Hat Enterprise Linux 8———
Red HatRed Hat Enterprise Linux 9———
Red HatRed Hat Fuse 7———
Red HatRed Hat JBoss Enterprise Application Platform 7———
Red HatRed Hat JBoss Enterprise Application Platform 8———
Red HatRed Hat JBoss Enterprise Application Platform Expansion Pack———
Red HatRed Hat JBoss Enterprise Application Platform Expansion Pack———
Red HatRed Hat JBoss Enterprise Application Platform Expansion Pack———
Red HatRed Hat Process Automation 7———
Red HatRed Hat Single Sign-On 7———

Weaknesses

CWE-444

References (4)

Related

Authoritative record: CVE-2026-28369 at cve.org

Vendors: red hat

Weaknesses: CWE-444

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-28369 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.