CVE-2026-3634

Low

Description

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.

SeverityLow

CVSS3.9

Exploit probability—

Product

Gnome Libsoup

PublishedMar 17, 2026

First seenMar 17, 2026

Weakness typeCWE-93CWE-93

How to fix

Vendor advisories

access.redhat.com/security/cve/CVE-2026-3634
bugzilla.redhat.com/show_bug.cgi?id=2445129

Affected products

Product	Affected versions	Fixed in
gnome libsoup	No range specified	—
redhat enterprise_linux	6.0, 7.0, 8.0, 9.0, 10.0	—

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