Cleartext Transmission of Sensitive Information Affecting libsoup3 package, versions *


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBSOUP3-15877839
  • published3 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

CVE-2026-5119  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable libsoup3.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup3 package and not the libsoup3 package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.

CVSS Base Scores

version 3.1