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.

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History

Fri, 29 May 2026 15:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 29 May 2026 06:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Libsoup: libsoup: http request smuggling via unsigned to signed conversion error
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-444
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-05-29T14:01:04.526Z

Reserved: 2026-04-14T20:50:53.403Z

Link: CVE-2026-6324

cve-icon Vulnrichment

Updated: 2026-05-29T14:00:59.497Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-29T07:16:14.327

Modified: 2026-05-29T15:16:25.023

Link: CVE-2026-6324

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-29T08:00:06Z

Weaknesses