CVE-2026-6324

A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request. This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-6324
https://bugzilla.redhat.com/show_bug.cgi?id=2458479
https://gitlab.gnome.org/GNOME/libsoup/-/issues/508
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/508

Configurations

No configuration.

History

21 Jul 2026, 12:10

Type	Values Removed	Values Added
Summary		(es) Se encontró un defecto en libsoup. Un atacante remoto podría explotar un error de conversión de sin signo a con signo en la función 'soup_body_input_stream_read_chunked()' enviando una solicitud HTTP maliciosa. Esta vulnerabilidad ocurre cuando libsoup opera detrás de un servidor proxy que no es libsoup o como proxy delante de un servidor backend que no es libsoup. La explotación exitosa puede permitir a un atacante eludir los controles de seguridad, envenenar las cachés web o obtener acceso no autorizado.

29 May 2026, 15:16

Type	Values Removed	Values Added
References		() https://gitlab.gnome.org/GNOME/libsoup/-/work_items/508 -

29 May 2026, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-29 07:16

Updated : 2026-07-21 12:10

NVD link : CVE-2026-6324

Mitre link : CVE-2026-6324

CVE.ORG link : CVE-2026-6324

JSON object : View

Products Affected

No product.

CWE

CWE-444

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

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