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CVE-2026-2708

Libsoup: libsoup: http request smuggling via duplicate content-length headers

CVSS 3.7 LOWEPSS 0.3%CWE-444
Vexday Risk Score
8Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 3.7EPSS 0.3%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
23 abr 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
A request smuggling vulnerability exists in libsoup's HTTP/1 header parsing logic. The soup_message_headers_append_common() function in libsoup/soup-message-headers.c unconditionally appends each header value without validating for duplicate or conflicting Content-Length fields. This allows an attacker to send HTTP requests containing multiple Content-Length headers with differing values.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

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