Source: undertow X-Debbugs-CC: [email protected] Severity: important Tags: security
Hi, The following vulnerability was published for undertow. CVE-2025-12543[0]: | 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. https://bugzilla.redhat.com/show_bug.cgi?id=2408784 If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2025-12543 https://www.cve.org/CVERecord?id=CVE-2025-12543 Please adjust the affected versions in the BTS as needed.
