CVE-2026-3632 (GCVE-0-2026-3632)

Vulnerability from cvelistv5 – Published: 2026-03-17 09:44 – Updated: 2026-11-06 18:37
VLAI
Title
Libsoup: libsoup: http smuggling and server-side request forgery via malformed hostnames
Summary
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.
Severity
3.9 (Low)
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 13:01 UTC
CWE
  • CWE-1286 - Improper Validation of Syntactic Correctness of Input
Assigner
redhat CNA
References
Impacted products
Date Public
2026-03-06 05:05
Credits
Red Hat would like to thank Codean Labs for reporting this issue.
Show details on NVD website
To clipboard 

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