HomeDefectsLIN1021-21727
Acknowledged

LIN1021-21727 : Security Advisory - libsoup&libsoup-2.4 - CVE-2026-1801

Created: Mar 5, 2026    Updated: Mar 30, 2026
Found In Version: 10.21.20.2
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace

Description

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup accepts malformed chunk headers, such as lone line feed (LF) characters instead of the required carriage return and line feed (CRLF). A remote attacker can exploit this without authentication or user interaction by sending specially crafted chunked requests. This allows libsoup to parse and process multiple HTTP requests from a single network message, potentially leading to information disclosure.