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CVE-2025-12543

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CVSS 3.1
9.6 critical
EPSS
1%p70
Published
()
Modified
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.

Vendors
redhat
Products
build of apache camel, data grid, fuse, jboss enterprise application platform, jboss enterprise application platform expansion pack, process automation, single sign-on, undertow
Weakness
CWE-20
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (1.4%)

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