Information Exposure Affecting libsoup3-doc package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

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-RHEL10-LIBSOUP3DOC-18302059
  • published25 Jul 2026
  • disclosed5 Jun 2026

Introduced: 5 Jun 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 RHEL:10 libsoup3-doc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup3-doc package and not the libsoup3-doc package as distributed by RHEL. See How to fix? for RHEL:10 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