CVE-2025-12543 in the critical feed json
Undertow-core: undertow http server fails to reject malformed host headers leading to potential cache poisoning and ssrf
published 2026-01-07 10 mo ago modified 2026-11-04 4 d ago also GHSA-j382-5jj3-vw4j , EUVD-2026-1207
- cvss
- 9.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven io.undertow:undertow-core 2.2.39.Final, 2.3.21.Final
- 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
- Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 0:2.0.41-8.SP9_redhat_00001.1.el7eap
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24 2.2.39.Final-redhat-00001
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.39-1.Final_redhat_00001.1.el7eap, 0:7.4.24-4.GA_redhat_00002.1.el7eap
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 0:2.2.39-1.Final_redhat_00001.1.el8eap, 0:7.4.24-4.GA_redhat_00002.1.el8eap
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 0:2.2.39-1.Final_redhat_00001.1.el9eap, 0:7.4.24-4.GA_redhat_00002.1.el9eap
- Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 0:1.0.0-3.redhat_00009.1.el8eap, 0:1.83.0-1.redhat_00001.1.el8eap, 0:2.0.2-1.Final_redhat_00001.1.el8eap, 0:2.3.23-1.SP3_redhat_00001.1.el8eap, 0:4.0.6-1.redhat_00001.1.el8eap, 0:33.0.0-2.jre_redhat_00003.1.el8eap
- Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 0:1.0.0-3.redhat_00009.1.el9eap, 0:1.83.0-1.redhat_00001.1.el9eap, 0:2.0.2-1.Final_redhat_00001.1.el9eap, 0:2.3.23-1.SP3_redhat_00001.1.el9eap, 0:4.0.6-1.redhat_00001.1.el9eap, 0:33.0.0-2.jre_redhat_00003.1.el9eap
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1.3 2.3.20.SP4-redhat-00001
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 0:1.0.1-3.redhat_00003.1.el8eap, 0:1.82.0-1.redhat_00001.1.el8eap, 0:2.3.20-2.SP4_redhat_00001.1.el8eap, 0:2.5.0-1.redhat_00001.1.el8eap, 0:2.6.6-1.Final_redhat_00001.1.el8eap, 0:4.0.2-1.Final_redhat_00001.1.el8eap, 0:4.0.10-1.redhat_00001.1.el8eap, 0:5.0.12-1.Final_redhat_00001.1.el8eap, 0:6.6.36-1.Final_redhat_00001.1.el8eap, 0:8.1.1-4.GA_redhat_00007.1.el8eap, 0:8.1.3-4.GA_redhat_00006.1.el8eap, 0:801.3.0-1.GA_redhat_00001.1.el8eap
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 0:1.0.1-3.redhat_00003.1.el9eap, 0:1.82.0-1.redhat_00001.1.el9eap, 0:2.3.20-2.SP4_redhat_00001.1.el9eap, 0:2.5.0-1.redhat_00001.1.el9eap, 0:2.6.6-1.Final_redhat_00001.1.el9eap, 0:4.0.2-1.Final_redhat_00001.1.el9eap, 0:4.0.10-1.redhat_00001.1.el9eap, 0:5.0.12-1.Final_redhat_00001.1.el9eap, 0:6.6.36-1.Final_redhat_00001.1.el9eap, 0:8.1.1-4.GA_redhat_00007.1.el9eap, 0:8.1.3-4.GA_redhat_00006.1.el9eap, 0:801.3.0-1.GA_redhat_00001.1.el9eap
- Red Hat Red Hat Single Sign-On 7.6 for RHEL 7 0:18.0.20-1.redhat_00001.1.el7sso
- Red Hat Red Hat Single Sign-On 7.6 for RHEL 8 0:18.0.20-1.redhat_00001.1.el8sso
- Red Hat Red Hat Single Sign-On 7.6 for RHEL 9 0:18.0.20-1.redhat_00001.1.el9sso
- Red Hat RHEL-8 based Middleware Containers 7.6-85
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6 2.3.24.SP2-redhat-00001
- undertow Ubuntu 26.10, Ubuntu 26.04 LTS 2.3.20-1ubuntu1
- undertow Ubuntu Pro 16.04 LTS 1.3.16-1ubuntu0.1~esm1
- undertow Ubuntu Pro 18.04 LTS 1.4.23-3ubuntu0.1~esm1
- undertow Ubuntu Pro 20.04 LTS 2.0.29-1ubuntu0.1~esm1
- undertow Ubuntu Pro 22.04 LTS 2.2.16-1ubuntu0.1~esm1
- undertow Ubuntu Pro 24.04 LTS 2.3.8-2ubuntu0.1~esm1
ubuntu advisories UBUNTU-CVE-2025-12543
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- rh-sso7-keycloak red hat single sign on 7.6 18.0.20-1.redhat_00001.1.el8sso
- rh-sso7-keycloak-server red hat single sign on 7.6 18.0.20-1.redhat_00001.1.el8sso
- rh-sso7-keycloak red hat single sign on 7.6 18.0.20-1.redhat_00001.1.el9sso
- rh-sso7-keycloak-server red hat single sign on 7.6 18.0.20-1.redhat_00001.1.el9sso
- rh-sso7-keycloak red hat single sign on 7.6 18.0.20-1.redhat_00001.1.el7sso
- rh-sso7-keycloak-server red hat single sign on 7.6 18.0.20-1.redhat_00001.1.el7sso
- eap8-jaxb jboss enterprise application platform 8.0 4.0.6-1.redhat_00001.1.el9eap
- eap8-txw2 jboss enterprise application platform 8.0 4.0.6-1.redhat_00001.1.el9eap
red hat advisories RHSA-2026:76129RHSA-2026:76130RHSA-2026:76128RHSA-2026:33371RHSA-2026:33372RHSA-2026:4916
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-12543 updated cvss 9.6
undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF
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Red Hat Data Grid 8 undertow-core Red Hat Fuse 7 undertow-coreaffected: workaround, no fix planned “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.”
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Red Hat JBoss Enterprise Application Platform 7 undertow-core Red Hat JBoss Enterprise Application Platform Expansion Pack undertow-coreaffected: workaround, no fix available “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.”
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Red Hat Process Automation 7 undertow-coreaffected: workaround, no fix planned “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.”
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Red Hat Middleware Containers for OpenShift rh-sso-7/sso76-openshift-rhel8 7.6-85fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:76134
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Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:3890
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Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server eap7-wildfly 7.4.24-4.GA_redhat_00002.1.el7eap, eap7-undertow 2.2.39-1.Final_redhat_00001.1.el7eap, eap7-wildfly-modules 7.4.24-4.GA_redhat_00002.1.el7eap, eap7-wildfly-javadocs 7.4.24-4.GA_redhat_00002.1.el7eap, eap7-wildfly-java-jdk8 7.4.24-4.GA_redhat_00002.1.el7eap, eap7-wildfly-java-jdk11 7.4.24-4.GA_redhat_00002.1.el7eapfixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:4915
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Red Hat JBoss EAP 7.4 ELS for RHEL 8 eap7-wildfly 7.4.24-4.GA_redhat_00002.1.el8eap, eap7-undertow 2.2.39-1.Final_redhat_00001.1.el8eap, eap7-wildfly-modules 7.4.24-4.GA_redhat_00002.1.el8eap, eap7-wildfly-javadocs 7.4.24-4.GA_redhat_00002.1.el8eap, eap7-wildfly-java-jdk8 7.4.24-4.GA_redhat_00002.1.el8eap, eap7-wildfly-java-jdk11 7.4.24-4.GA_redhat_00002.1.el8eap, +1 morefixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:4916
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Red Hat JBoss EAP 7.4 ELS for RHEL 9 eap7-wildfly 7.4.24-4.GA_redhat_00002.1.el9eap, eap7-undertow 2.2.39-1.Final_redhat_00001.1.el9eap, eap7-wildfly-modules 7.4.24-4.GA_redhat_00002.1.el9eap, eap7-wildfly-javadocs 7.4.24-4.GA_redhat_00002.1.el9eap, eap7-wildfly-java-jdk8 7.4.24-4.GA_redhat_00002.1.el9eap, eap7-wildfly-java-jdk11 7.4.24-4.GA_redhat_00002.1.el9eap, +1 morefixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:4917
show 17 moreshow fewer
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Red Hat JBoss EAP 8.0 for RHEL 8 eap8-jaxb 4.0.6-1.redhat_00001.1.el8eap, eap8-txw2 4.0.6-1.redhat_00001.1.el8eap, eap8-xsom 4.0.6-1.redhat_00001.1.el8eap, eap8-rngom 4.0.6-1.redhat_00001.1.el8eap, eap8-jaxb-jxc 4.0.6-1.redhat_00001.1.el8eap, eap8-jaxb-xjc 4.0.6-1.redhat_00001.1.el8eap, +15 morefixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:3889
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Red Hat JBoss EAP 8.0 for RHEL 9 eap8-jaxb 4.0.6-1.redhat_00001.1.el9eap, eap8-txw2 4.0.6-1.redhat_00001.1.el9eap, eap8-xsom 4.0.6-1.redhat_00001.1.el9eap, eap8-rngom 4.0.6-1.redhat_00001.1.el9eap, eap8-jaxb-jxc 4.0.6-1.redhat_00001.1.el9eap, eap8-jaxb-xjc 4.0.6-1.redhat_00001.1.el9eap, +15 morefixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:3891
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Red Hat JBoss EAP 8.1 for RHEL 8 eap8-wildfly 8.1.3-4.GA_redhat_00006.1.el8eap, eap8-apache-cxf 4.0.10-1.redhat_00001.1.el8eap, eap8-eventstream 1.0.1-3.redhat_00003.1.el8eap, eap8-bouncycastle 1.82.0-1.redhat_00001.1.el8eap, eap8-jboss-threads 2.5.0-1.redhat_00001.1.el8eap, eap8-undertow 2.3.20-2.SP4_redhat_00001.1.el8eap, +40 morefixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:0383
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Red Hat JBoss EAP 8.1 for RHEL 9 eap8-wildfly 8.1.3-4.GA_redhat_00006.1.el9eap, eap8-apache-cxf 4.0.10-1.redhat_00001.1.el9eap, eap8-eventstream 1.0.1-3.redhat_00003.1.el9eap, eap8-bouncycastle 1.82.0-1.redhat_00001.1.el9eap, eap8-jboss-threads 2.5.0-1.redhat_00001.1.el9eap, eap8-undertow 2.3.20-2.SP4_redhat_00001.1.el9eap, +40 morefixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:0384
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Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-undertow 1.4.18-21.SP19_redhat_00001.1.ep7.el7fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:33372
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Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 Server eap7-undertow 2.0.41-8.SP9_redhat_00001.1.el7eapfixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:33371
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Red Hat JBoss Enterprise Application Platform 7.4.24 undertow-core 2.2.39.Final-redhat-00001fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:4924
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Red Hat JBoss Enterprise Application Platform 8.0fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:3892
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Red Hat JBoss Enterprise Application Platform 8.1.3 undertow-core 2.3.20.SP4-redhat-00001fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:0386
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Red Hat Single Sign-On 7.6 for RHEL 7 Server rh-sso7-keycloak 18.0.20-1.redhat_00001.1.el7sso, rh-sso7-keycloak-server 18.0.20-1.redhat_00001.1.el7ssofixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:76128
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Red Hat Single Sign-On 7.6 for RHEL 8 rh-sso7-keycloak 18.0.20-1.redhat_00001.1.el8sso, rh-sso7-keycloak-server 18.0.20-1.redhat_00001.1.el8ssofixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:76129
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Red Hat Single Sign-On 7.6 for RHEL 9 rh-sso7-keycloak 18.0.20-1.redhat_00001.1.el9sso, rh-sso7-keycloak-server 18.0.20-1.redhat_00001.1.el9ssofixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:76130
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Red Hat Single Sign-On 7.6.13fixed: vendor fix “Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use, applicability, or stability.” RHSA-2026:76132
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Red Hat build of Apache Camel - HawtIO 4 undertow-corenot affected: vulnerable code not in execute path
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Red Hat Enterprise Linux 8 resteasy, resteasy-javadocnot affected: vulnerable code not present
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Red Hat Enterprise Linux 9 resteasy, pki-resteasy-core, pki-resteasy-client, pki-resteasy-jackson2-provider, pki-resteasy-servlet-initializernot affected: component not present
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Red Hat Enterprise Linux 10 moditect Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server eap7-netty 4.1.124-1.Final_redhat_00001.1.el7eap, eap7-apache-cxf 3.5.11-1.SP1_redhat_00001.1.el7eap, eap7-hibernate 5.3.38-1.Final_redhat_00001.1.el7eap, eap7-resteasy 3.15.11-1.Final_redhat_00001.1.el7eap, eap7-elytron-web 1.9.6-2.Final_redhat_00001.1.el7eap, eap7-netty-all 4.1.124-1.Final_redhat_00001.1.el7eap, +74 more Red Hat JBoss EAP 7.4 ELS for RHEL 8 eap7-netty 4.1.124-1.Final_redhat_00001.1.el8eap, eap7-apache-cxf 3.5.11-1.SP1_redhat_00001.1.el8eap, eap7-hibernate 5.3.38-1.Final_redhat_00001.1.el8eap, eap7-resteasy 3.15.11-1.Final_redhat_00001.1.el8eap, eap7-elytron-web 1.9.6-2.Final_redhat_00001.1.el8eap, eap7-netty-all 4.1.124-1.Final_redhat_00001.1.el8eap, +74 more Red Hat JBoss EAP 7.4 ELS for RHEL 9 eap7-netty 4.1.124-1.Final_redhat_00001.1.el9eap, eap7-apache-cxf 3.5.11-1.SP1_redhat_00001.1.el9eap, eap7-hibernate 5.3.38-1.Final_redhat_00001.1.el9eap, eap7-resteasy 3.15.11-1.Final_redhat_00001.1.el9eap, eap7-elytron-web 1.9.6-2.Final_redhat_00001.1.el9eap, eap7-apache-cxf-rt 3.5.11-1.SP1_redhat_00001.1.el9eap, +71 more Red Hat JBoss EAP 8.0 for RHEL 8 eap8-gson 2.10.1-1.redhat_00005.1.el8eap, eap8-jose4j 0.9.6-2.redhat_00002.1.el8eap, eap8-yasson 3.0.4-2.redhat_00006.1.el8eap, eap8-javaewah 1.2.3-1.redhat_00002.1.el8eap, eap8-apache-cxf 4.0.10-2.redhat_00001.1.el8eap, eap8-wildfly 8.0.12-5.GA_redhat_00008.1.el8eap, +63 more Red Hat JBoss EAP 8.0 for RHEL 9 eap8-gson 2.10.1-1.redhat_00005.1.el9eap, eap8-jose4j 0.9.6-2.redhat_00002.1.el9eap, eap8-yasson 3.0.4-2.redhat_00006.1.el9eap, eap8-javaewah 1.2.3-1.redhat_00002.1.el9eap, eap8-apache-cxf 4.0.10-2.redhat_00001.1.el9eap, eap8-wildfly 8.0.12-5.GA_redhat_00008.1.el9eap, +63 morenot affected: vulnerable code not present
+4 more productsfewer
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-apache-cxf 3.1.16-7.redhat_00007.1.ep7.el7, eap7-wildfly 7.1.15-3.GA_redhat_00002.1.ep7.el7, eap7-apache-cxf-rt 3.1.16-7.redhat_00007.1.ep7.el7, eap7-apache-cxf-tools 3.1.16-7.redhat_00007.1.ep7.el7, eap7-wildfly-modules 7.1.15-3.GA_redhat_00002.1.ep7.el7, eap7-apache-cxf-services 3.1.16-7.redhat_00007.1.ep7.el7 Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 Server eap7-wildfly 7.3.18-3.GA_redhat_00001.1.el7eap, eap7-apache-cxf 3.4.10-4.SP2_redhat_00004.1.el7eap, eap7-apache-cxf-rt 3.4.10-4.SP2_redhat_00004.1.el7eap, eap7-wildfly-modules 7.3.18-3.GA_redhat_00001.1.el7eap, eap7-wildfly-javadocs 7.3.18-3.GA_redhat_00001.1.el7eap, eap7-apache-cxf-tools 3.4.10-4.SP2_redhat_00004.1.el7eap, +25 more Red Hat JBoss Enterprise Application Platform 7.4.24 pom.xml, c3 0.6.0, c3 0.7.1, d3 5.9.2, fs 2.1.2, ip 2.0.0, +1552 more Red Hat JBoss Enterprise Application Platform 8.1.3 pom.xml, aesh 2.4, c3 0.6.4, d3 7.4.3, he 1.2.0, lr 1.4.2, +1858 more
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 6 mo ago
Exploit prediction
1.33% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L |
| CISA ADP | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L |
| NVD | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| GitHub | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | io.undertow:undertow-core | 1 listed version >=2.3.0.Alpha1, <2.3.21.Final <2.2.39.Final |
2.3.21.Final 2.2.39.Final |
Affected products
- Red Hat Red Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11
- Red Hat Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7
- Red Hat Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4.24
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8
- Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9
- Red Hat Red Hat JBoss Enterprise Application Platform 8.0
- Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 8
- Red Hat Red Hat JBoss Enterprise Application Platform 8.0 for RHEL 9
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1.3
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
- Red Hat Red Hat Single Sign-On 7.6.13
- Red Hat Red Hat Single Sign-On 7.6 for RHEL 7
- Red Hat Red Hat Single Sign-On 7.6 for RHEL 8
- Red Hat Red Hat Single Sign-On 7.6 for RHEL 9
- Red Hat RHEL-8 based Middleware Containers
- Red Hat Red Hat build of Apache Camel - HawtIO 4
- Red Hat Red Hat Data Grid 8
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Fuse 7
- Red Hat Red Hat JBoss Enterprise Application Platform 7
- Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Red Hat Process Automation 7
- Red Hat Red Hat JBoss Enterprise Application Platform 8.1.6
- Red Hat Red Hat Single Sign-On 7
Classification
- Weakness
-
- CWE-20 Improper Input Validation
- Technology feeds
References
-
github.com
/undertow-io/undertow/pull/1860
web
-
github.com
/undertow-io/undertow/pull/1857
web
-
access.redhat.com
/errata/RHSA-2026:0383
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:0384
vendor-advisory, web
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access.redhat.com
/errata/RHSA-2026:0386
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:33371
vendor-advisory
-
access.redhat.com
/errata/RHSA-2026:33372
vendor-advisory
-
access.redhat.com
/errata/RHSA-2026:3889
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:3890
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:3891
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:3892
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:4915
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:4916
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:4917
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:4924
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2026:76128
vendor-advisory
-
access.redhat.com
/errata/RHSA-2026:76129
vendor-advisory
-
access.redhat.com
/errata/RHSA-2026:76130
vendor-advisory
-
access.redhat.com
/errata/RHSA-2026:76132
vendor-advisory
-
access.redhat.com
/errata/RHSA-2026:76134
vendor-advisory
-
access.redhat.com
/security/cve/CVE-2025-12543
vdb-entry, web, vendor-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=2408784
issue-tracking, web, vendor-advisory
- security.access.redhat.com /data/csaf/v2/vex/2025/cve-2025-12543.json
-
nvd.nist.gov
/vuln/detail/CVE-2025-12543
advisory
-
issues.redhat.com
/browse/UNDERTOW-2656
web
-
github.com
/undertow-io/undertow/releases/tag/2.3.21.Final
web
-
github.com
/undertow-io/undertow/releases/tag/2.2.39.Final
web
-
github.com
/undertow-io/undertow
package
Sources
- CVE List CVE-2025-12543
- GitHub Advisory GHSA-j382-5jj3-vw4j
- NVD CVE-2025-12543
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.