Information Exposure Affecting libsoup2.4 package, versions *


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.23% (14th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ECHOLATEST-LIBSOUP24-18306968
  • published25 Jul 2026
  • disclosed24 Jul 2026

Introduced: 24 Jul 2026

CVE-2026-66339  (opens in a new tab)
CWE-201  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest libsoup2.4.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup2.4 package and not the libsoup2.4 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials, leading to information disclosure.

CVSS Base Scores

version 3.1