Information Exposure Affecting libsoup-3_0-0 package, versions <3.0.4-150400.3.52.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (15th percentile)

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  • Snyk IDSNYK-SLES154-LIBSOUP300-20570631
  • published8 Oct 2026
  • disclosed7 Oct 2026

Introduced: 7 Oct 2026

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

How to fix?

Upgrade SLES:15.4 libsoup-3_0-0 to version 3.0.4-150400.3.52.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup-3_0-0 package and not the libsoup-3_0-0 package as distributed by SLES. See How to fix? for SLES:15.4 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