Логотип exploitDog
Консоль
Логотип exploitDog

exploitDog

redhat логотип

CVE-2025-12543

Опубликовано: 08 янв. 2026
Источник: redhat
CVSS3: 9.6
EPSS Низкий

Описание

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.

Отчет

This vulnerability has an Important severity because it can be remotely exploited without authentication. However, limited user interaction is required for full impact. It could allow attackers to hijack additional accounts, steal credentials, or gain access to internal systems. The issue stems from improper input validation of HTTP Host headers, leading to serious breaches in confidentiality and integrity.

Меры по смягчению последствий

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.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat build of Apache Camel - HawtIO 4undertow-coreNot affected
Red Hat Data Grid 8undertow-coreWill not fix
Red Hat Enterprise Linux 10moditectNot affected
Red Hat Enterprise Linux 8pki-core:10.6/resteasyNot affected
Red Hat Enterprise Linux 8pki-deps:10.6/resteasyNot affected
Red Hat Enterprise Linux 9resteasyNot affected
Red Hat Fuse 7undertow-coreWill not fix
Red Hat JBoss Enterprise Application Platform Expansion Packundertow-coreAffected
Red Hat Process Automation 7undertow-coreWill not fix
Red Hat Single Sign-On 7undertow-coreAffected

Показывать по

Дополнительная информация

Статус:

Important
Дефект:
CWE-20
https://bugzilla.redhat.com/show_bug.cgi?id=2408784undertow-core: Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and SSRF

EPSS

Процентиль: 66%
0.012
Низкий

9.6 Critical

CVSS3

Связанные уязвимости

CVSS3: 9.6
ubuntu
7 месяцев назад

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.

CVSS3: 9.6
nvd
7 месяцев назад

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.

CVSS3: 9.6
debian
7 месяцев назад

A flaw was found in the Undertow HTTP server core, which is used in Wi ...

CVSS3: 9.6
github
7 месяцев назад

Undertow HTTP server core doesn't properly validate the Host header in incoming HTTP requests

CVSS3: 9.6
fstec
7 месяцев назад

Уязвимость ядра HTTP-сервера Undertow, связанная с ошибками механизма проверки входных данных при обработке заголовков Host, позволяющая нарушителю осуществить SSRF-атаку

EPSS

Процентиль: 66%
0.012
Низкий

9.6 Critical

CVSS3