CVE-2025-14523
Fixed in a distro release EPSS <1%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.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 6
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | libsoup3-doc | 3.6.5-3.el10_1.8 |
| AlmaLinux 8 | libsoup | 2.62.3-11.el8_10 |
| AlmaLinux 8 | libsoup-devel | 2.62.3-11.el8_10 |
| AlmaLinux 9 | libsoup | 2.72.0-12.el9_7.3 |
| AlmaLinux 9 | libsoup-devel | 2.72.0-12.el9_7.3 |
| Debian 12 | libsoup2.4 | no fix |
| Debian 12 | libsoup3 | no fix |
| Debian 13 | libsoup2.4 | no fix |
| Debian 13 | libsoup3 | no fix |
| Debian 14 | libsoup3 | 3.6.5-7 |
| Red Hat Enterprise Linux 10.1 | libsoup3 | 0:3.6.5-3.el10_1.8 |
| Red Hat Enterprise Linux 10.1 | libsoup3-debuginfo | 0:3.6.5-3.el10_1.8 |
| Red Hat Enterprise Linux 10.1 | libsoup3-debugsource | 0:3.6.5-3.el10_1.8 |
| Red Hat Enterprise Linux 10.1 | libsoup3-devel | 0:3.6.5-3.el10_1.8 |
| Red Hat Enterprise Linux 10.1 | libsoup3-doc | 0:3.6.5-3.el10_1.8 |
| Red Hat Enterprise Linux 8 | libsoup | 0:2.62.3-11.el8_10 |
| Red Hat Enterprise Linux 8 | libsoup-debuginfo | 0:2.62.3-11.el8_10 |
| Red Hat Enterprise Linux 8 | libsoup-debugsource | 0:2.62.3-11.el8_10 |
| Red Hat Enterprise Linux 8 | libsoup-devel | 0:2.62.3-11.el8_10 |
| Red Hat Enterprise Linux 8 | spice-client-win | 0:8.10-6.el8_10.1 |
| Red Hat Enterprise Linux 8 | spice-client-win-x64 | 0:8.10-6.el8_10.1 |
| Red Hat Enterprise Linux 8 | spice-client-win-x86 | 0:8.10-6.el8_10.1 |
| Red Hat Enterprise Linux 9 | libsoup | 0:2.72.0-12.el9_7.3 |
| Red Hat Enterprise Linux 9 | libsoup-debuginfo | 0:2.72.0-12.el9_7.3 |
| Red Hat Enterprise Linux 9 | libsoup-debugsource | 0:2.72.0-12.el9_7.3 |
| Red Hat Enterprise Linux 9 | libsoup-devel | 0:2.72.0-12.el9_7.3 |
| Red Hat Enterprise Linux eus 10.0 | libsoup3 | 0:3.6.5-3.el10_0.11 |
| Red Hat Enterprise Linux eus 10.0 | libsoup3-debuginfo | 0:3.6.5-3.el10_0.11 |
| Red Hat Enterprise Linux eus 10.0 | libsoup3-debugsource | 0:3.6.5-3.el10_0.11 |
| Red Hat Enterprise Linux eus 10.0 | libsoup3-devel | 0:3.6.5-3.el10_0.11 |
| Red Hat Enterprise Linux eus 10.0 | libsoup3-doc | 0:3.6.5-3.el10_0.11 |
| Red Hat rhel aus 8.2 | libsoup | 0:2.62.3-1.el8_2.7 |
| Red Hat rhel aus 8.2 | libsoup-debuginfo | 0:2.62.3-1.el8_2.7 |
| Red Hat rhel aus 8.2 | libsoup-debugsource | 0:2.62.3-1.el8_2.7 |
| Red Hat rhel aus 8.2 | libsoup-devel | 0:2.62.3-1.el8_2.7 |
| Red Hat rhel aus 8.2 | spice-client-win | 0:8.10-6.el8_2.1 |
| Red Hat rhel aus 8.2 | spice-client-win-x64 | 0:8.10-6.el8_2.1 |
| Red Hat rhel aus 8.2 | spice-client-win-x86 | 0:8.10-6.el8_2.1 |
| Red Hat rhel aus 8.4 | libsoup | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel aus 8.4 | libsoup-debuginfo | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel aus 8.4 | libsoup-debugsource | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel aus 8.4 | libsoup-devel | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel aus 8.4 | spice-client-win | 0:8.10-6.el8_4.1 |
| Red Hat rhel aus 8.4 | spice-client-win-x64 | 0:8.10-6.el8_4.1 |
| Red Hat rhel aus 8.4 | spice-client-win-x86 | 0:8.10-6.el8_4.1 |
| Red Hat rhel aus 8.6 | libsoup | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel aus 8.6 | libsoup-debuginfo | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel aus 8.6 | libsoup-debugsource | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel aus 8.6 | libsoup-devel | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel aus 8.6 | spice-client-win | 0:8.10-6.el8_6.1 |
| Red Hat rhel aus 8.6 | spice-client-win-x64 | 0:8.10-6.el8_6.1 |
| Red Hat rhel aus 8.6 | spice-client-win-x86 | 0:8.10-6.el8_6.1 |
| Red Hat rhel e4s 8.6 | libsoup | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel e4s 8.6 | libsoup-debuginfo | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel e4s 8.6 | libsoup-debugsource | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel e4s 8.6 | libsoup-devel | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel e4s 8.6 | spice-client-win | 0:8.10-6.el8_6.1 |
| Red Hat rhel e4s 8.6 | spice-client-win-x64 | 0:8.10-6.el8_6.1 |
| Red Hat rhel e4s 8.6 | spice-client-win-x86 | 0:8.10-6.el8_6.1 |
| Red Hat rhel e4s 8.8 | libsoup | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel e4s 8.8 | libsoup-debuginfo | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel e4s 8.8 | libsoup-debugsource | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel e4s 8.8 | libsoup-devel | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel e4s 8.8 | spice-client-win | 0:8.10-6.el8_8.1 |
| Red Hat rhel e4s 8.8 | spice-client-win-x64 | 0:8.10-6.el8_8.1 |
| Red Hat rhel e4s 8.8 | spice-client-win-x86 | 0:8.10-6.el8_8.1 |
| Red Hat rhel e4s 9.0 | libsoup | 0:2.72.0-8.el9_0.8 |
| Red Hat rhel e4s 9.0 | libsoup-debuginfo | 0:2.72.0-8.el9_0.8 |
| Red Hat rhel e4s 9.0 | libsoup-debugsource | 0:2.72.0-8.el9_0.8 |
| Red Hat rhel e4s 9.0 | libsoup-devel | 0:2.72.0-8.el9_0.8 |
| Red Hat rhel e4s 9.2 | libsoup | 0:2.72.0-8.el9_2.8 |
| Red Hat rhel e4s 9.2 | libsoup-debuginfo | 0:2.72.0-8.el9_2.8 |
| Red Hat rhel e4s 9.2 | libsoup-debugsource | 0:2.72.0-8.el9_2.8 |
| Red Hat rhel e4s 9.2 | libsoup-devel | 0:2.72.0-8.el9_2.8 |
| Red Hat rhel els 7 | libsoup | 0:2.62.2-10.el7_9 |
| Red Hat rhel els 7 | libsoup-debuginfo | 0:2.62.2-10.el7_9 |
| Red Hat rhel els 7 | libsoup-devel | 0:2.62.2-10.el7_9 |
| Red Hat rhel eus 9.4 | libsoup | 0:2.72.0-8.el9_4.8 |
| Red Hat rhel eus 9.4 | libsoup-debuginfo | 0:2.72.0-8.el9_4.8 |
| Red Hat rhel eus 9.4 | libsoup-debugsource | 0:2.72.0-8.el9_4.8 |
| Red Hat rhel eus 9.4 | libsoup-devel | 0:2.72.0-8.el9_4.8 |
| Red Hat rhel eus 9.6 | libsoup | 0:2.72.0-10.el9_6.5 |
| Red Hat rhel eus 9.6 | libsoup-debuginfo | 0:2.72.0-10.el9_6.5 |
| Red Hat rhel eus 9.6 | libsoup-debugsource | 0:2.72.0-10.el9_6.5 |
| Red Hat rhel eus 9.6 | libsoup-devel | 0:2.72.0-10.el9_6.5 |
| Red Hat rhel eus long life 8.4 | libsoup | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel eus long life 8.4 | libsoup-debuginfo | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel eus long life 8.4 | libsoup-debugsource | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel eus long life 8.4 | libsoup-devel | 0:2.62.3-2.el8_4.7 |
| Red Hat rhel eus long life 8.4 | spice-client-win | 0:8.10-6.el8_4.1 |
| Red Hat rhel eus long life 8.4 | spice-client-win-x64 | 0:8.10-6.el8_4.1 |
| Red Hat rhel eus long life 8.4 | spice-client-win-x86 | 0:8.10-6.el8_4.1 |
| Red Hat rhel tus 8.6 | libsoup | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel tus 8.6 | libsoup-debuginfo | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel tus 8.6 | libsoup-debugsource | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel tus 8.6 | libsoup-devel | 0:2.62.3-2.el8_6.7 |
| Red Hat rhel tus 8.6 | spice-client-win | 0:8.10-6.el8_6.1 |
| Red Hat rhel tus 8.6 | spice-client-win-x64 | 0:8.10-6.el8_6.1 |
| Red Hat rhel tus 8.6 | spice-client-win-x86 | 0:8.10-6.el8_6.1 |
| Red Hat rhel tus 8.8 | libsoup | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel tus 8.8 | libsoup-debuginfo | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel tus 8.8 | libsoup-debugsource | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel tus 8.8 | libsoup-devel | 0:2.62.3-3.el8_8.7 |
| Red Hat rhel tus 8.8 | spice-client-win | 0:8.10-6.el8_8.1 |
| Red Hat rhel tus 8.8 | spice-client-win-x64 | 0:8.10-6.el8_8.1 |
| Red Hat rhel tus 8.8 | spice-client-win-x86 | 0:8.10-6.el8_8.1 |
| Rocky Linux 10 | libsoup3 | 0:3.6.5-3.el10_1.8 |
| Rocky Linux 8 | libsoup | 0:2.62.3-11.el8_10 |
| Rocky Linux 8 | spice-client-win | 0:8.10-6.el8_10.1 |
| Rocky Linux 9 | libsoup | 0:2.72.0-12.el9_7.3 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Micro 5.2 | libsoup | 2.68.4-150200.4.19.1 |
| SUSE Linux Enterprise Micro 5.3 | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Micro 5.3 | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Micro 5.4 | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Micro 5.4 | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Micro 5.5 | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Micro 5.5 | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | libsoup | 3.4.4-150600.3.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | libsoup2 | 2.74.3-150600.4.19.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | libsoup | 2.62.2-5.23.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | libsoup | 3.4.4-150600.3.28.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | libsoup2 | 2.74.3-150600.4.19.1 |
| SUSE Linux Enterprise Server 16.0 | libsoup | 3.6.6-160000.1.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | libsoup | 2.62.2-5.23.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | libsoup | 3.0.4-150400.3.28.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | libsoup2 | 2.74.3-150400.3.40.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | libsoup2 | 2.74.2-150400.3.19.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | libsoup | 3.4.4-150600.3.28.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | libsoup2 | 2.74.3-150600.4.19.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | libsoup | 3.6.6-160000.1.1 |
| SUSE Linux Micro 6.0 | libsoup | 3.4.2-10.1 |
| SUSE Linux Micro 6.1 | libsoup | 3.4.4-slfo.1.1_6.1 |
| SUSE Linux Micro 6.2 | libsoup | 3.6.6-160000.1.1 |
| Ubuntu 22.04 LTS | libsoup2.4 | no fix |
| Ubuntu 24.04 LTS | libsoup2.4 | no fix |
| Ubuntu 24.04 LTS | libsoup3 | no fix |
| Ubuntu 25.10 | libsoup2.4 | no fix |
| Ubuntu 25.10 | libsoup3 | no fix |
| Ubuntu 26.10 | libsoup2.4 | no fix |
| Ubuntu Pro 16.04 LTS | libsoup2.4 | no fix |
| Ubuntu Pro 18.04 LTS | libsoup2.4 | no fix |
| Ubuntu Pro 20.04 LTS | libsoup2.4 | no fix |
| Ubuntu Pro 22.04 LTS | libsoup3 | no fix |
| Ubuntu Pro 26.04 LTS | libsoup2.4 | no fix |
| openSUSE Leap 15.6 | libsoup | 3.4.4-150600.3.28.1 |
| openSUSE Leap 15.6 | libsoup2 | 2.74.3-150600.4.19.1 |
| openSUSE Leap 16.0 | libsoup | 3.6.6-160000.1.1 |
| openSUSE Leap 16.0 | libsoup2 | 2.74.3-160000.4.1 |
| openSUSE Tumbleweed | libsoup | 3.6.5-10.1 |
| openSUSE Tumbleweed | libsoup2 | 2.74.3-13.1 |