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Vulnerabilities

Vulnerability · CVE-2026-28369

A flaw was found in Undertow.

Published Mar 27, 2026 · catalog updated Oct 14, 2026 · build of apache camel - hawtio

Check if you run it

No confirmed exploitation is on record for CVE-2026-28369. EPSS is 0.89%. Act only if a listed version of build of apache camel - hawtio is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.89%
Remediation
Advisory link
Affected products
cpe redhat/build of apache camel - hawtio · cpe redhat/build of apache camel for spring boot · cpe redhat/data grid · cpe redhat/fuse · cpe redhat/jboss enterprise application platform · cpe redhat/jboss enterprise application platform expansion pack

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe redhat/build of apache camel - hawtio4.0
  • cpe redhat/build of apache camel for spring boot4.0
  • cpe redhat/data grid8.0
  • cpe redhat/fuse7.0.0
  • cpe redhat/jboss enterprise application platform7.0.0
  • cpe redhat/jboss enterprise application platform8.0.0
  • cpe redhat/jboss enterprise application platform expansion packversion unspecified
  • cpe redhat/process automation7.0

How to fix CVE-2026-28369

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-28369. EPSS is 0.89%. Act only if a listed version of build of apache camel - hawtio is installed.

Which versions are affected?

Compare what you have installed with redhat/build of apache camel - hawtio 4.0; redhat/build of apache camel for spring boot 4.0; redhat/data grid 8.0; redhat/jboss enterprise application platform 7.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-444: HTTP Request Smuggling. EPSS 0.89%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 27, 2026 · NIST NVD

    Detected

    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

  2. Oct 14, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-28369

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-28369

    30-day exploitation probability 0.9%

    first.org
  • NIST NVDVulnerability recordCVE-2026-28369

    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 atta

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.