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CVE

CVE-2025-12543

CVE-2025-12543 on Ubuntu 24.04 LTS (noble) - high
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CVE

CVE-2025-12543

CVE-2025-12543 on Ubuntu 24.04 LTS (noble) - high

A flaw was found in the Undertow HTTP server core, which is used inWildFly, JBoss EAP, and other Java applications. The Undertow library failsto properly validate the Host header in incoming HTTP requests.As a result,requests containing malformed or malicious Host headers are processedwithout rejection, enabling attackers to poison caches, perform internalnetwork scans, or hijack user sessions.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.6
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
C
H
U
-
C
H
U
-

Related Resources

No items found.

References

https://www.cve.org/CVERecord?id=CVE-2025-12543

Severity

0

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
0
EPSS Probability
0.00134%
EPSS Percentile
0.33902%
Introduced Version
0
Fix Available

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