CVE-2025-14523

High CVSS: 8.2

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.

Vendor

Product

CWE

CWE-444

Yayın Tarihi

2025-12-11 13:15:58

Güncelleme

2026-03-19 15:16:17

Source Identifier

secalert@redhat.com

KEV Date Added

Kategoriler

CWE-444 HIGH 2025

Referanslar

https://access.redhat.com/errata/RHSA-2026:0421 https://access.redhat.com/errata/RHSA-2026:0422 https://access.redhat.com/errata/RHSA-2026:0423 https://access.redhat.com/errata/RHSA-2026:0836 https://access.redhat.com/errata/RHSA-2026:0867 https://access.redhat.com/errata/RHSA-2026:0868 https://access.redhat.com/errata/RHSA-2026:0905 https://access.redhat.com/errata/RHSA-2026:0906 https://access.redhat.com/errata/RHSA-2026:0907 https://access.redhat.com/errata/RHSA-2026:0908 https://access.redhat.com/errata/RHSA-2026:0909 https://access.redhat.com/errata/RHSA-2026:0911 https://access.redhat.com/errata/RHSA-2026:0925 https://access.redhat.com/errata/RHSA-2026:1509 https://access.redhat.com/errata/RHSA-2026:1569 https://access.redhat.com/errata/RHSA-2026:1570 https://access.redhat.com/errata/RHSA-2026:1571 https://access.redhat.com/errata/RHSA-2026:1572 https://access.redhat.com/security/cve/CVE-2025-14523 https://bugzilla.redhat.com/show_bug.cgi?id=2421349 https://gitlab.gnome.org/GNOME/libsoup/-/issues/472