A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.
History

Thu, 19 Mar 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Gnome
Gnome libsoup
CPEs cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*
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:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Vendors & Products Gnome
Gnome libsoup

Tue, 17 Mar 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 17 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE. A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.
Title libsoup: libsoup: HTTP header injection and response splitting via CRLF injection in Content-Type header Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header
First Time appeared Redhat
Redhat enterprise Linux
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

Mon, 09 Mar 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Libsoup
Libsoup libsoup
Vendors & Products Libsoup
Libsoup libsoup

Fri, 06 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
Description No description is available for this CVE.
Title libsoup: libsoup: HTTP header injection and response splitting via CRLF injection in Content-Type header
Weaknesses CWE-93
References
Metrics threat_severity

None

cvssV3_1

{'score': 3.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L'}

threat_severity

Moderate


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-03-17T09:44:19.631Z

Updated: 2026-03-19T20:55:36.678Z

Reserved: 2026-03-06T08:03:35.024Z

Link: CVE-2026-3634

cve-icon Vulnrichment

Updated: 2026-03-17T13:02:58.442Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-17T10:16:00.860

Modified: 2026-03-19T19:52:33.170

Link: CVE-2026-3634

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-06T05:05:00Z

Links: CVE-2026-3634 - Bugzilla