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CVE-2026-3633

Libsoup: libsoup: header and http request injection via crlf injection

Published: Mar 17, 2026Updated: Mar 19, 2026 Sources: CVE List NVDCWE-93
3.9LOW
NVD MITRE
EPSS Score
0.2%
Top 87.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

A flaw was found in libsoup. A remote attacker, by controlling the method parameter of the `soup_message_new()` function, could inject arbitrary headers and additional request data. This vulnerability, known as CRLF (Carriage Return Line Feed) injection, occurs because the method value is not properly escaped during request line construction, potentially leading to HTTP request injection.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:RS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-93

Affected Products

gnome
oss-project·USaka gnome project, glib
libsoupLibraryLibrary
OSS Libraries / generic-library
Red Hat
commercial·USaka redhat
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
and 5 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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References

https://access.redhat.com/security/cve/CVE-2026-3633
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2445128
bugzilla.redhat.com
https://gitlab.gnome.org/GNOME/libsoup/-/issues/484
gitlab.gnome.org

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