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3.9 Low

CVE-2026-3634 Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header

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.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L

Exploitable remotely over the network, with an administrator account and if a user takes an action; the impact on data or service is limited.

Attack vector
Network
Attack complexity
High
Privileges required
High
Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
The 1456 CVEs of Red Hat Enterprise Linux 10 →
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