CVE-2026-3634CWE-93

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

Low · published March 17, 2026

CVSS v3.1
3.9
EPSS
0%
Percentile
23.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.9 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00318 · 23.5th percentile
Weakness
CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2026-03-17T09:44Z
EPSS history
Timeline
  • 17 MAR 09:44Z
    Libsoup: libsoup: http header injection and response splitting via crlf injection in content-type header
    cvelistv5