Cloudanix VulnDB

CVE-2025-14523

High · 8.2

CVSS

8.2

EPSS

0.5%

Published

Dec 11, 2025

CISA due date

—

The record

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the backend interprets it as destined for another host. This discrepancy enables request-smuggling style attacks, cache poisoning, or bypassing host-based access controls when an attacker supplies duplicate Host headers.

Affected packages

Ecosystem Package Introduced Fixed
SUSE:Linux Enterprise Module for Basesystem 15 SP7 libsoup 0 3.4.4-150600.3.28.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7 libsoup2 0 2.74.3-150600.4.19.1
SUSE:Linux Enterprise Server 15 SP6-LTSS libsoup 0 3.4.4-150600.3.28.1
SUSE:Linux Enterprise Server 15 SP6-LTSS libsoup2 0 2.74.3-150600.4.19.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP6 libsoup 0 3.4.4-150600.3.28.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP6 libsoup2 0 2.74.3-150600.4.19.1
openSUSE:Leap 15.6 libsoup 0 3.4.4-150600.3.28.1
openSUSE:Leap 15.6 libsoup2 0 2.74.3-150600.4.19.1
openSUSE:Leap 16.0 libsoup 0 3.6.6-160000.1.1
openSUSE:Leap 16.0 libsoup2 0 2.74.3-160000.4.1
openSUSE:Tumbleweed libsoup 0 3.6.5-10.1
openSUSE:Tumbleweed libsoup2 0 2.74.3-13.1

Related vulnerabilities