CVE-2026-3632
A flaw was found in libsoup, a library used by applications to send network requests. This vulnerability occurs because libsoup does not properly validate hostnames, allowing special characters to be injected into HTTP headers. A remote attacker could exploit this to perform HTTP smuggling, where they can send hidden, malicious requests alongside legitimate ones. In certain situations, this could lead to Server-Side Request Forgery (SSRF), enabling an attacker to force the server to make unauthorized requests to other internal or external systems. The impact is low, as SoupServer is not actually used in internet infrastructure.
Published:Mar 6, 2026
Last Modified:Apr 16, 2026
EPS:Mar 17, 2026
EPSS Score:0.00096
CVSS Score:3.9
Affected Products
Vendor
Product
Action
Vendor
Gnome
Product
Libsoup
Gnome
Libsoup
Vendor
Libsoup
Product
Libsoup
Libsoup
Libsoup
Vendor
Redhat
Product
Enterprise Linux
Redhat
Enterprise Linux
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
