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CVE-2026-1760— Libsoup: soupserver: denial of service via http request smuggling

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SoupServer中对Transfer-Encoding: chunked和Connection: keep-alive标头的处理不当，可能导致HTTP请求夹带技术和拒绝服务攻击。

CVSS 5.3 · Medium EPSS 0.48% · P39
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I. Basic Information for CVE-2026-1760

Vulnerability Information
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Vulnerability Title
Libsoup: soupserver: denial of service via http request smuggling
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SoupServer. This HTTP request smuggling vulnerability occurs because SoupServer improperly handles requests that combine Transfer-Encoding: chunked and Connection: keep-alive headers. A remote, unauthenticated client can exploit this by sending specially crafted requests, causing SoupServer to fail to close the connection as required by RFC 9112. This allows the attacker to smuggle additional requests over the persistent connection, leading to unintended request processing and potential denial-of-service (DoS) conditions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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SoupServer中对Transfer-Encoding: chunked和Connection: keep-alive标头的处理不当，可能导致HTTP请求夹带技术和拒绝服务攻击。
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 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-1760

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III. Intelligence Information for CVE-2026-1760

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Vendor Advisories for CVE-2026-1760 (2)

Other References for CVE-2026-1760 (1)

Same Patch Batch · Red Hat · 2026-02-02 · 6 CVEs total

CVE-2026-1761 8.6 HIGH Libsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http r
CVE-2026-1531 8.1 HIGH Foreman-kubevirt: foreman_kubevirt: man-in-the-middle due to insecure default ssl verifica
CVE-2026-1530 8.1 HIGH Fog-kubevirt: fog-kubevirt: man-in-the-middle vulnerability due to disabled certificate va
CVE-2026-1757 6.2 MEDIUM Libxml2: memory leak leading to local denial of service in xmllint interactive shell
CVE-2025-13881 2.7 LOW Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensit

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-1760

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