Low severity3.9NVD Advisory· Published Mar 17, 2026· Updated Jun 17, 2026
CVE-2026-3632
CVE-2026-3632
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.
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Affected products
12cpe:/o:redhat:enterprise_linux:10+ 9 more
- cpe:/o:redhat:enterprise_linux:10
- cpe:/o:redhat:enterprise_linux:6
- cpe:/o:redhat:enterprise_linux:7
- cpe:/o:redhat:enterprise_linux:8
- cpe:/o:redhat:enterprise_linux:9
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
(expand)+ 1 more
- (no CPE)
- cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
3- gitlab.gnome.org/GNOME/libsoup/-/issues/483nvdExploitIssue TrackingVendor Advisory
- access.redhat.com/security/cve/CVE-2026-3632nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
News mentions
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