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.
History

Mon, 30 Mar 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 30 Mar 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 30 Mar 2026 06:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Libsoup: libsoup: information disclosure via cleartext transmission of cookies during https tunnel establishment
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-319
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-03-30T16:01:02.216Z

Reserved: 2026-03-30T05:13:41.920Z

Link: CVE-2026-5119

cve-icon Vulnrichment

Updated: 2026-03-30T16:00:57.729Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-30T07:15:58.350

Modified: 2026-03-30T13:26:07.647

Link: CVE-2026-5119

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-03-30T05:30:32Z

Links: CVE-2026-5119 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-03-30T07:59:09Z