Improper Input Validation Affecting pki-resteasy-client package, versions *


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-CENTOS9-PKIRESTEASYCLIENT-14915490
  • published13 Jan 2026
  • disclosed8 Jan 2026

Introduced: 8 Jan 2026

CVE-2025-12543  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 pki-resteasy-client.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pki-resteasy-client package and not the pki-resteasy-client package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1