CyberRota Analysis
This is a critical severity vulnerability with a CVSS score of 9.6. It affects Java.
CVE
CVE-2025-12543
Severity
CRITICAL
CVSS
9.6
EPSS
1.18%
Java
Original NVD Description
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.
Related CVEs
Other vulnerabilities affecting the same vendor(s)