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CVE-2026-6324— Libsoup: libsoup: http request smuggling via unsigned to signed conversion error

CVSS 4.8 · Medium EPSS 0.33% · P24
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I. Basic Information for CVE-2026-6324

Vulnerability Information
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Vulnerability Title
Libsoup: libsoup: http request smuggling via unsigned to signed conversion error
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request. This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: NVD (National Vulnerability Database)
Vulnerability Title
libsoup 安全漏洞
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存在安全漏洞，该漏洞源于soup_body_input_stream_read_chunked函数中存在无符号到有符号转换错误，可能导致远程攻击者通过发送恶意HTTP请求绕过安全控制、污染Web缓存或获得未授权访问。
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

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-6324

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III. Intelligence Information for CVE-2026-6324

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Patches & Fixes for CVE-2026-6324 (1)

Vendor Advisories for CVE-2026-6324 (2)

Same Patch Batch · Red Hat · 2026-05-29 · 6 CVEs total

CVE-2026-429657.7 HIGHOpenshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypas
CVE-2026-465797.4 HIGHOpenshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-
CVE-2026-101016.3 MEDIUMAssisted-service: assisted-service: infraenv status leaks referenced pull-secret contents
CVE-2026-100524.1 MEDIUMQuay/config-tool: quay/config-tool: ssrf via unfiltered ldap and smtp config validation en
CVE-2026-100782.7 LOWQuay/config-tool: quay/config-tool: gitlab oauth client_secret exposed in url querystring

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-6324

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