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CVE-2025-14523— Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libsoup是GNOME项目的一款GNOME的HTTP客户端/服务器库。 libsoup存在环境问题漏洞，该漏洞源于HTTP标头处理不当，可能导致请求夹带攻击、缓存投毒或绕过基于主机的访问控制。

CVSS 8.2 · High EPSS 0.54% · P45

Affected Version Matrix 28

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_1.8< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.6.5-3.el10_0.11< * unaffected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.62.2-10.el7_9< * unaffected
Red Hat Red Hat Enterprise Linux 8 0:2.62.3-11.el8_10< * unaffected
0:8.10-6.el8_10.1< * unaffected
0:2.62.3-11.el8_10< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.62.3-1.el8_2.7< * unaffected
0:8.10-6.el8_2.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.62.3-2.el8_4.7< * unaffected
0:8.10-6.el8_4.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.62.3-2.el8_4.7< * unaffected
0:8.10-6.el8_4.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.62.3-2.el8_6.7< * unaffected
0:8.10-6.el8_6.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.62.3-2.el8_6.7< * unaffected
0:8.10-6.el8_6.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.62.3-2.el8_6.7< * unaffected
0:8.10-6.el8_6.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.62.3-3.el8_8.7< * unaffected
0:8.10-6.el8_8.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.62.3-3.el8_8.7< * unaffected
0:8.10-6.el8_8.1< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:2.72.0-12.el9_7.3< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.72.0-8.el9_0.8< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.72.0-8.el9_2.8< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.8< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:2.72.0-10.el9_6.5< * unaffected
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I. Basic Information for CVE-2025-14523

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
libsoup 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libsoup是GNOME项目的一款GNOME的HTTP客户端/服务器库。 libsoup存在环境问题漏洞，该漏洞源于HTTP标头处理不当，可能导致请求夹带攻击、缓存投毒或绕过基于主机的访问控制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_1.8 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.6.5-3.el10_0.11 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.62.2-10.el7_9 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 0:2.62.3-11.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:8.10-6.el8_10.1 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:2.62.3-11.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.62.3-1.el8_2.7 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:8.10-6.el8_2.1 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.62.3-2.el8_4.7 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:8.10-6.el8_4.1 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.62.3-2.el8_4.7 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:8.10-6.el8_4.1 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.62.3-2.el8_6.7 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:8.10-6.el8_6.1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.62.3-2.el8_6.7 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:8.10-6.el8_6.1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.62.3-2.el8_6.7 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:8.10-6.el8_6.1 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.62.3-3.el8_8.7 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:8.10-6.el8_8.1 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.62.3-3.el8_8.7 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:8.10-6.el8_8.1 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 9 0:2.72.0-12.el9_7.3 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.72.0-8.el9_0.8 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.72.0-8.el9_2.8 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.8 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:2.72.0-10.el9_6.5 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6

II. Public POCs for CVE-2025-14523

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2025-14523

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Patches & Fixes for CVE-2025-14523 (1)

Vendor Advisories for CVE-2025-14523 (13)

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-444