CVE-2026-5119
MEDIUM severity · CVSS 5.9 · CWE-319
5.9CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactLow
Availability impactNone
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- 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/errata/RHSA-2026:21686
- https://access.redhat.com/errata/RHSA-2026:22316