Bug 2440743 (CVE-2026-2708) - CVE-2026-2708 libsoup: libsoup: HTTP Request Smuggling via Duplicate Content-Length Headers
Summary: CVE-2026-2708 libsoup: libsoup: HTTP Request Smuggling via Duplicate Content-...
Keywords:
Status: NEW
Alias: CVE-2026-2708
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-18 20:24 UTC by OSIDB Bzimport
Modified: 2026-02-19 16:48 UTC (History)
0 users

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Description OSIDB Bzimport 2026-02-18 20:24:12 UTC 
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.
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