Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnome | Libsoup | - |
| Redhat | Enterprise Linux | 7.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:13978
- https://access.redhat.com/errata/RHSA-2026:14087
- https://access.redhat.com/errata/RHSA-2026:15968
- https://access.redhat.com/errata/RHSA-2026:17482
- https://access.redhat.com/errata/RHSA-2026:19143
- https://access.redhat.com/errata/RHSA-2026:19356
- https://access.redhat.com/security/cve/CVE-2026-5119MitigationVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2452932Issue TrackingVendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/502ExploitIssue Tracking
FAQ
What is CVE-2026-5119?
CVE-2026-5119 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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-...
How severe is CVE-2026-5119?
CVE-2026-5119 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5119?
Check the references section above for vendor advisories and patch information. Affected products include: Gnome Libsoup, Redhat Enterprise Linux.