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CVE-2026-3632

Libsoup: libsoup: http smuggling and server-side request forgery via malformed hostnames

CVSS 3.9 LOWEPSS 0.2%CWE-1286
Vexday Risk Score
8Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 3.9EPSS 0.2%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
17 mar 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
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.
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L

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