Bug 2452932 (CVE-2026-5119)

Summary: CVE-2026-5119 libsoup: libsoup: Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, security-response-team, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
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.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2452934, 2452936, 2452935    
Bug Blocks:    

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.

Comment 1 errata-xmlrpc 2026-05-06 11:42:48 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:13978 https://access.redhat.com/errata/RHSA-2026:13978

Comment 2 errata-xmlrpc 2026-05-06 12:42:32 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:14087 https://access.redhat.com/errata/RHSA-2026:14087

Comment 3 errata-xmlrpc 2026-05-11 21:32:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:15968 https://access.redhat.com/errata/RHSA-2026:15968

Comment 4 errata-xmlrpc 2026-05-14 09:11:38 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:17482 https://access.redhat.com/errata/RHSA-2026:17482

Comment 5 errata-xmlrpc 2026-05-19 16:08:45 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19143 https://access.redhat.com/errata/RHSA-2026:19143

Comment 6 errata-xmlrpc 2026-05-19 21:40:02 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19356 https://access.redhat.com/errata/RHSA-2026:19356

Comment 7 errata-xmlrpc 2026-05-28 07:03:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:21686 https://access.redhat.com/errata/RHSA-2026:21686

Comment 8 errata-xmlrpc 2026-06-01 12:44:41 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:22316 https://access.redhat.com/errata/RHSA-2026:22316

Comment 9 errata-xmlrpc 2026-06-01 13:25:17 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:22317 https://access.redhat.com/errata/RHSA-2026:22317

Comment 10 errata-xmlrpc 2026-06-01 15:02:49 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:22323 https://access.redhat.com/errata/RHSA-2026:22323

Comment 11 errata-xmlrpc 2026-06-03 07:06:42 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:22710 https://access.redhat.com/errata/RHSA-2026:22710

Comment 12 errata-xmlrpc 2026-06-03 09:25:07 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:22716 https://access.redhat.com/errata/RHSA-2026:22716

Comment 13 errata-xmlrpc 2026-06-08 02:27:16 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:24344 https://access.redhat.com/errata/RHSA-2026:24344

Comment 14 errata-xmlrpc 2026-06-09 08:50:19 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:24722 https://access.redhat.com/errata/RHSA-2026:24722