VDB

CISA-2025-12543

CISA-2025-12543 PUBLISHED CVSS 9.6 CRITICAL

Reported by redhat · Published January 7, 2026

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without rejection, enabling attackers to poison caches, perform internal network scans, or hijack user sessions.

Risk Scores

CVSS 3.1
9.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

Affected Products

VendorProductVersions
Red HatRed Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11
Red HatRed Hat JBoss Enterprise Application Platform 8.0
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 80:1.83.0-1.redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 80:33.0.0-2.jre_redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 80:4.0.6-1.redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 80:1.0.0-3.redhat_00009.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 80:2.0.2-1.Final_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 80:2.3.23-1.SP3_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 90:1.83.0-1.redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 90:33.0.0-2.jre_redhat_00003.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 90:4.0.6-1.redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 90:1.0.0-3.redhat_00009.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 90:2.0.2-1.Final_redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 90:2.3.23-1.SP3_redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 80:4.0.10-1.redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 80:1.82.0-1.redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 80:801.3.0-1.GA_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 80:1.0.1-3.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 80:6.6.36-1.Final_redhat_00001.1.el8eap

…and 87 more

Timeline

  • Jan 7, 2026 CVE Published
  • Mar 10, 2026 CVE Updated
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch
  • Mar 20, 2026 Distribution Patch

References

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