CVE-2026-1801

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-1801
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.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/security/cve/CVE-2026-1801 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2436315 Issue Tracking Vendor Advisory
https://gitlab.gnome.org/GNOME/libsoup/-/issues/481 Issue Tracking
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
History

26 Mar 2026, 18:02

Type Values Removed Values Added
First Time Redhat
Gnome
Gnome libsoup
Redhat enterprise Linux
References () https://access.redhat.com/security/cve/CVE-2026-1801 - () https://access.redhat.com/security/cve/CVE-2026-1801 - Vendor Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2436315 - () https://bugzilla.redhat.com/show_bug.cgi?id=2436315 - Issue Tracking, Vendor Advisory
References () https://gitlab.gnome.org/GNOME/libsoup/-/issues/481 - () https://gitlab.gnome.org/GNOME/libsoup/-/issues/481 - Issue Tracking
CPE cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*

19 Mar 2026, 15:16

Type Values Removed Values Added
References
  • () https://gitlab.gnome.org/GNOME/libsoup/-/issues/481 -
Summary
  • (es) Se encontró una falla en libsoup, una librería cliente/servidor HTTP. Esta vulnerabilidad de contrabando de solicitudes HTTP surge de un análisis no conforme con RFC en la lógica de soup_filter_input_stream_read_line(), donde libsoup acepta encabezados de fragmentos malformados, como caracteres de avance de línea (LF) solitarios en lugar del retorno de carro y avance de línea (CRLF) requeridos. Un atacante remoto puede explotar esto sin autenticación ni interacción del usuario enviando solicitudes fragmentadas especialmente diseñadas. Esto permite a libsoup analizar y procesar múltiples solicitudes HTTP desde un único mensaje de red, lo que podría llevar a la revelación de información.

03 Feb 2026, 21:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-03 21:16

Updated : 2026-03-26 18:02

NVD link : CVE-2026-1801

Mitre link : CVE-2026-1801

CVE.ORG link : CVE-2026-1801

JSON object : View

Products Affected

redhat

  • enterprise_linux

gnome

  • libsoup
CWE
CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')