Bug 2452932 (CVE-2026-5119) - CVE-2026-5119 libsoup: libsoup: Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment
Summary: CVE-2026-5119 libsoup: libsoup: Information disclosure via cleartext transmis...
Keywords:
Status: NEW
Alias: CVE-2026-5119
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2452934 2452935 2452936
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-30 05:15 UTC by OSIDB Bzimport
Modified: 2026-03-30 05:34 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-03-30 05:15:51 UTC 
Cleartext Transmission of Sensitive Information has been reported in libsoup’s HTTP CONNECT handling. When establishing HTTPS tunnels via soup_session.c::tunnel_connect(), cookies (including potentially sensitive session cookies) are sent in cleartext within the initial HTTP CONNECT request to the configured proxy. A network-positioned attacker or malicious HTTP proxy can intercept or observe these cookies and leverage them for session hijacking or user impersonation.
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