HTTP Request Smuggling Affecting libsoup2.4 package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.39% (33rd percentile)

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  • Snyk IDSNYK-UBUNTU2204-LIBSOUP24-15204888
  • published16 Sept 2026
  • disclosed3 Feb 2026

Introduced: 3 Feb 2026

CVE-2026-1801  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:22.04 libsoup2.4.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup2.4 package and not the libsoup2.4 package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1