CVE-2025-12543
CRITICAL
INFO
Priority: 0.13
BB Relevance:
69/100
Published: 2026-01-07
Modified: 2026-11-04
First seen: 2026-11-03
Status: active
Attack Surface
Network
Low Complexity
No Auth
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Required
S:
Changed
C:
High
I:
High
A:
High
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.
Weakness Classification (1)
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| redhat | build_of_apache_camel | < 4.14.4 |
| redhat | data_grid | 8.0 |
| redhat | fuse | 7.0.0 |
| redhat | jboss_enterprise_application_platform | 8.0 – 8.0.12 |
| redhat | jboss_enterprise_application_platform | - |
| redhat | jboss_enterprise_application_platform | 7.0.0 |
| redhat | jboss_enterprise_application_platform_expansion_pack | - |
| redhat | process_automation | 7.0 |
| redhat | single_sign-on | 7.0 |
| redhat | undertow | < 2.2.39 |
References & Advisories (21)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT