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CVE-2025-12543— Undertow-core: undertow http server fails to reject malformed host headers leading to potential cache poisoning and ssrf

Quick assessment

Affected
Red Hat Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Undertow是美国红帽（Red Hat）公司的一款基于Java的嵌入式Web服务器，是Wildfly（Java应用服务器）默认的Web服务器。 Red Hat Undertow存在安全漏洞，该漏洞源于未正确验证Host标头，可能导致缓存投毒、内部网络扫描或会话劫持。

CVSS 9.6 · Critical EPSS 1.33% · P70

Affected Version Matrix 59

VendorProduct Version RangeStatus
Red Hat Red Hat build of Apache Camel - HawtIO 4 any unaffected
Red Hat Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11 any unaffected
Red Hat Red Hat Data Grid 8 any affected
Red Hat Red Hat Enterprise Linux 10 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
any unaffected
Red Hat Red Hat Enterprise Linux 9 any unaffected
Red Hat Red Hat Fuse 7 any affected
Red Hat Red Hat JBoss Enterprise Application Platform 7 any affected
Red Hat Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:2.0.41-8.SP9_redhat_00001.1.el7eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.39-1.Final_redhat_00001.1.el7eap< * unaffected
0:7.4.24-4.GA_redhat_00002.1.el7eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:2.2.39-1.Final_redhat_00001.1.el8eap< * unaffected
0:7.4.24-4.GA_redhat_00002.1.el8eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:2.2.39-1.Final_redhat_00001.1.el9eap< * unaffected
0:7.4.24-4.GA_redhat_00002.1.el9eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24 2.2.39.Final-redhat-00001< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 any unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.83.0-1.redhat_00001.1.el8eap< * unaffected
0:33.0.0-2.jre_redhat_00003.1.el8eap< * unaffected
0:4.0.6-1.redhat_00001.1.el8eap< * unaffected
0:1.0.0-3.redhat_00009.1.el8eap< * unaffected
0:2.0.2-1.Final_redhat_00001.1.el8eap< * unaffected
0:2.3.23-1.SP3_redhat_00001.1.el8eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.83.0-1.redhat_00001.1.el9eap< * unaffected
0:33.0.0-2.jre_redhat_00003.1.el9eap< * unaffected
0:4.0.6-1.redhat_00001.1.el9eap< * unaffected
0:1.0.0-3.redhat_00009.1.el9eap< * unaffected
0:2.0.2-1.Final_redhat_00001.1.el9eap< * unaffected
0:2.3.23-1.SP3_redhat_00001.1.el9eap< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.10-1.redhat_00001.1.el8eap< * unaffected
0:1.82.0-1.redhat_00001.1.el8eap< * unaffected
0:801.3.0-1.GA_redhat_00001.1.el8eap< * unaffected
0:1.0.1-3.redhat_00003.1.el8eap< * unaffected
0:6.6.36-1.Final_redhat_00001.1.el8eap< * unaffected
0:4.0.2-1.Final_redhat_00001.1.el8eap< * unaffected
0:2.5.0-1.redhat_00001.1.el8eap< * unaffected
0:2.3.20-2.SP4_redhat_00001.1.el8eap< * unaffected
… +4 more rows
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:4.0.10-1.redhat_00001.1.el9eap< * unaffected
0:1.82.0-1.redhat_00001.1.el9eap< * unaffected
0:801.3.0-1.GA_redhat_00001.1.el9eap< * unaffected
0:1.0.1-3.redhat_00003.1.el9eap< * unaffected
0:6.6.36-1.Final_redhat_00001.1.el9eap< * unaffected
0:4.0.2-1.Final_redhat_00001.1.el9eap< * unaffected
0:2.5.0-1.redhat_00001.1.el9eap< * unaffected
0:2.3.20-2.SP4_redhat_00001.1.el9eap< * unaffected
… +4 more rows
Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6 2.3.24.SP2-redhat-00001< * unaffected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack any affected
Red Hat Red Hat Process Automation 7 any affected
Red Hat Red Hat Single Sign-On 7 any affected
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I. Basic Information for CVE-2025-12543

Vulnerability Information
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Vulnerability Title
Undertow-core: undertow http server fails to reject malformed host headers leading to potential cache poisoning and ssrf
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Undertow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Undertow是美国红帽（Red Hat）公司的一款基于Java的嵌入式Web服务器，是Wildfly（Java应用服务器）默认的Web服务器。 Red Hat Undertow存在安全漏洞，该漏洞源于未正确验证Host标头，可能导致缓存投毒、内部网络扫描或会话劫持。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11 - cpe:/a:redhat:apache_camel_spring_boot:4.14
Red Hat Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 0:1.4.18-21.SP19_redhat_00001.1.ep7.el7 ~ * cpe:/a:redhat:jboss_enterprise_application_platform_eus:7.1::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:2.0.41-8.SP9_redhat_00001.1.el7eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_eus:7.3::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24 2.2.39.Final-redhat-00001 ~ * cpe:/a:redhat:jboss_enterprise_application_platform:7.4
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.39-1.Final_redhat_00001.1.el7eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:7.4.24-4.GA_redhat_00002.1.el7eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:2.2.39-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:7.4.24-4.GA_redhat_00002.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el8
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:2.2.39-1.Final_redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:7.4.24-4.GA_redhat_00002.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 - cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.83.0-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:33.0.0-2.jre_redhat_00003.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:4.0.6-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.0.0-3.redhat_00009.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.0.2-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:2.3.23-1.SP3_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.83.0-1.redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:33.0.0-2.jre_redhat_00003.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:4.0.6-1.redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.0.0-3.redhat_00009.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.0.2-1.Final_redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:2.3.23-1.SP3_redhat_00001.1.el9eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6 2.3.24.SP2-redhat-00001 ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.10-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.82.0-1.redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:801.3.0-1.GA_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.0.1-3.redhat_00003.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:6.6.36-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8
Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:4.0.2-1.Final_redhat_00001.1.el8eap ~ * cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8

II. Public POCs for CVE-2025-12543

# POC Description Source Link Shenlong Link
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default-local-qwen3.6 · 14465 chars
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III. Intelligence Information for CVE-2025-12543

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Vendor Advisories for CVE-2025-12543 (15)

IV. Related Vulnerabilities

Same vendor: Red Hat
Same weakness: CWE-20

V. Comments for CVE-2025-12543

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