VulnerabilityModified
CVE-2026-5119
A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.
HIGH 8.2EPSS 0.25%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 0.25% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-319
- Affected
- gnome/libsoup · redhat/enterprise linux
- Source
- secalert@redhat.com
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/errata/RHSA-2026:21686
- https://access.redhat.com/errata/RHSA-2026:22316
- https://access.redhat.com/errata/RHSA-2026:22317
- https://access.redhat.com/errata/RHSA-2026:22323
- https://access.redhat.com/errata/RHSA-2026:22710
- https://access.redhat.com/errata/RHSA-2026:22716
- https://access.redhat.com/errata/RHSA-2026:24344
- https://access.redhat.com/errata/RHSA-2026:24722
- https://access.redhat.com/security/cve/CVE-2026-5119Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2452932Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/502Exploit, Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.