Описание
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.
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.
Ссылки
- https://nvd.nist.gov/vuln/detail/CVE-2025-14523
- 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/security/cve/CVE-2025-14523
- https://bugzilla.redhat.com/show_bug.cgi?id=2421349
Связанные уязвимости
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.
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.
Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)
A flaw in libsoup\u2019s HTTP header handling allows multiple Host: he ...
