Unity Linux 20.1070e Security Update: undertow (UTSA-2026-016715)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016715 advisory. A flaw was discovered in Undertow in versions before Undertow 2.1.1.Final where certain requests to the Expect: 100-continue header may cause an out of memory error...

Unity Linux 20.1070e Security Update: undertow (UTSA-2026-016708)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016708 advisory. A flaw was found in Undertow in versions before 2.1.1.Final, regarding the processing of invalid HTTP requests with large chunk sizes. This flaw allows an attacker t...

Unity Linux 20.1070e Security Update: undertow (UTSA-2026-016720)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016720 advisory. A vulnerability was found in Undertow web server before 2.0.21. An information exposure of plain text credentials through log files because...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: undertow (UTSA-2026-021493)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021493 advisory. A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParseStreamSourceChannel method to...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: undertow (UTSA-2026-021479)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021479 advisory. A flaw was found in Undertow. Servlets using a method that calls HttpServletRequestImpl.getParameterNames can cause an OutOfMemoryError when the client sends a reque...

com.github.fmcejudo:quarkus-eureka (>=1.0.0 <=1.1.1), com.github.fmcejudo:quarkus-eureka-deployment (>=1.0.0 <=1.1.1) +70 more potentially affected by CVE-2026-39852 via io.quarkus:quarkus-undertow (>=3.0.0.Alpha1 <=3.20.6)

io.quarkus:quarkus-undertow MAVEN version =3.0.0.Alpha1, =1.0.0, =1.0.0, =2.0.0-alpha1, =24.4.0, =24.4.0, =2.0.0-alpha1, =24.4.0, =24.4.0, =2.0.0, =2.0.0, =24.0.0, =24.8.3, =9.2.3, =0.11.2, =0.23.0 and more Source cves: CVE-2026-39852 Source advisory: SNYK:JAVA-IOQUARKUS-16420253...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization when handling HTTP request paths that have had normalizedPath applied. An attacker can gain unauthorized access to protected resources by appending a semicolon and arbitrary text to the request URL, exploiting...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of the Undertow web server

Summary Due to use of the Undertow web server, DevOps Test Performance and Rational Performance Tester contain a potential Denial of Service DoS vulnerability. Vulnerability Details CVEID:CVE-2025-9784 DESCRIPTION: A flaw was found in Undertow where malformed client requests can trigger server-si...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of the Undertow web server library

Summary Due to use of the Undertow web server library, DevOps Test Performance and Rational Performance Tester contain a potential Denial of Service DoS vulnerability. Vulnerability Details CVEID:CVE-2026-3260 DESCRIPTION: A flaw was found in Undertow. A remote attacker could exploit this...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of the Undertow server core

Summary Due to use of Undertow, DevOps Test Performance and Rational Performance Tester contain a potential improper input validation vulnerability. CVE-2025-12543 Vulnerability Details CVEID:CVE-2025-12543 DESCRIPTION: A flaw was found in the Undertow HTTP server core, which is used in WildFly,...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of the Undertow web server component

Summary Due to use of the Undertow web server component, DevOps Test Performance and Rational Performance Tester contain a potential vulnerability that can cause a denial of service DoS. CVE-2024-3884 Vulnerability Details CVEID:CVE-2024-3884 DESCRIPTION: A flaw was found in Undertow that can cau...

Security Bulletin: DevOps Test Performance contains a vulnerability related to use of the Undertow web server

Summary Due to use of the Undertow web server, DevOps Test Performance and Rational Performance Tester contain a potential improper input validation vulnerability. CVE-2024-4027 Vulnerability Details CVEID:CVE-2024-4027 DESCRIPTION: A flaw was found in Undertow. Servlets using a method that calls...

Security Bulletin: Improper Host Header Validation in Undertow HTTP Server Enables Cache Poisoning and Session Hijacking affects watsonx.data

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...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Undertow vulnerability (USN-8144-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-8144-1 advisory. It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker...

Ubuntu: Security Advisory (USN-8144-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-8144-1 undertow vulnerability

It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker could possibly use this issue to gain unintended access to user sessions...

USN-8144-1: Undertow vulnerability

It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker could possibly use this issue to gain unintended access to user sessions...

PT-2026-29966

It was discovered that Undertow incorrectly validated the Host header in incoming HTTP requests. A remote attacker could possibly use this issue to gain unintended access to user sessions...

Critical: Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.17 security update

An update is now available for Red Hat JBoss Enterprise Application Platform 7.3 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability scoring System CVSS base score, which gives a detailed severity rating, ...

undertow: OutOfMemory when parsing form data encoding with application/x-www-form-urlencoded

A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParseStreamSourceChannel method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows...