CVE-2026-1467CWE-93

Libsoup: libsoup: http header injection via specially crafted urls when an http proxy is configured

Medium · published January 27, 2026

CVSS v3.1
5.8
EPSS
0%
Percentile
29.3
In the wild
Unconfirmed
What it is

A flaw was found in libsoup, an HTTP client library. This vulnerability, known as CRLF (Carriage Return Line Feed) Injection, occurs when an HTTP proxy is configured and the library improperly handles URL-decoded input used to create the Host header. A remote attacker can exploit this by providing a specially crafted URL containing CRLF sequences, allowing them to inject additional HTTP headers or complete HTTP request bodies. This can lead to unintended or unauthorized HTTP requests being forwarded by the proxy, potentially impacting downstream services.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00366 · 29.3th percentile
Weakness
CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2026-01-27T09:17Z
EPSS history
Timeline
  • 27 JAN 09:17Z
    Libsoup: libsoup: http header injection via specially crafted urls when an http proxy is configured
    cvelistv5