CVE-2026-2708 — Libsoup: libsoup: http request smuggling via duplicate content-length headers
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 unconditio…
Published: 2026-04-23 · CVSS: 3.7 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7