CVE-2026-1801 (GCVE-0-2026-1801)

Vulnerability from cvelistv5 – Published: 2026-02-03 20:12 – Updated: 2026-11-06 18:05
VLAI
Title
Libsoup: libsoup: http request smuggling via malformed chunk headers
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 20:40 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests
Assigner
redhat CNA
References
Impacted products
Date Public
2026-02-03 00:00
Credits
Red Hat would like to thank Ahmed Lekssays for reporting this issue.
Show details on NVD website
To clipboard 

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