FKIE_CVE-2026-3632

Vulnerability from fkie_nvd - Published: 2026-03-17 10:16 - Updated: 2026-03-19 19:56
Severity ?
3.9 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
5.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Summary
A flaw was found in libsoup, a library used by applications to send network requests. This vulnerability occurs because libsoup does not properly validate hostnames, allowing special characters to be injected into HTTP headers. A remote attacker could exploit this to perform HTTP smuggling, where they can send hidden, malicious requests alongside legitimate ones. In certain situations, this could lead to Server-Side Request Forgery (SSRF), enabling an attacker to force the server to make unauthorized requests to other internal or external systems. The impact is low, as SoupServer is not actually used in internet infrastructure.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-3632Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2445127Issue Tracking, Vendor Advisory
secalert@redhat.comhttps://gitlab.gnome.org/GNOME/libsoup/-/issues/483Exploit, Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
gnome libsoup -
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
To clipboard 

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      "value": "A flaw was found in libsoup, a library used by applications to send network requests. This vulnerability occurs because libsoup does not properly validate hostnames, allowing special characters to be injected into HTTP headers. A remote attacker could exploit this to perform HTTP smuggling, where they can send hidden, malicious requests alongside legitimate ones. In certain situations, this could lead to Server-Side Request Forgery (SSRF), enabling an attacker to force the server to make unauthorized requests to other internal or external systems. The impact is low, as SoupServer is not actually used in internet infrastructure."
    },
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      "value": "Se encontr\u00f3 un defecto en libsoup, una biblioteca utilizada por aplicaciones para enviar peticiones de red. Esta vulnerabilidad ocurre porque libsoup no valida correctamente los nombres de host, permitiendo que se inyecten caracteres especiales en las cabeceras HTTP. Un atacante remoto podr\u00eda explotar esto para realizar contrabando HTTP, donde pueden enviar peticiones ocultas y maliciosas junto con las leg\u00edtimas. En ciertas situaciones, esto podr\u00eda llevar a Falsificaci\u00f3n de Petici\u00f3n del Lado del Servidor (SSRF), permitiendo a un atacante forzar al servidor a realizar peticiones no autorizadas a otros sistemas internos o externos. El impacto es bajo, ya que SoupServer no se utiliza realmente en la infraestructura de internet."
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  "id": "CVE-2026-3632",
  "lastModified": "2026-03-19T19:56:43.170",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.