Home/CVE/A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage
CVE

CVE-2026-3634

A flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage

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.

LOW · CVSS 3.9 EPSS 0.00037
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')
▤

Affected Products & Versions

2
gnome libsoupall versions
redhat enterprise linuxall versions
⚠

Public Exploits & PoCs

1
pocgitlab.gnome.org · issues/485gitlab.gnome.org
▣

Scoring & Timeline

3.9
LOW · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Mar 2026 · 10:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
msrcCVE-2026-3634
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2026-3634Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2445129Issue TrackingVendor Advisory
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