CVE-2026-6324 MEDIUM

CVE-2026-6324: Libsoup: libsoup: http request smuggling via unsigned to signed conversion error

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-444
Published May 29, 2026
Last update May 29, 2026

CVSS base score

4.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 29, 2026 CVE published
May 29, 2026 Record updated