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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-3632 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/security/cve/CVE-2026-3632 Red Hat, Inc. Vendor Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2445127 Red Hat, Inc. Issue Tracking  Vendor Advisory 
https://gitlab.gnome.org/GNOME/libsoup/-/issues/483 Red Hat, Inc. Exploit  Issue Tracking  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1286 Improper Validation of Syntactic Correctness of Input Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-3632
NVD Published Date:
03/17/2026
NVD Last Modified:
06/17/2026
Source:
Red Hat, Inc.