Libsoup: libsoup: information disclosure via cleartext transmission of cookies during https tunnel establishment
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.3%
exploitation probability
0.3%top 83% of all CVEs
observed exploitation
nono source reports it
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/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
Affected products
Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle SupportRed Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.6 Extended Update SupportReferences
https://access.redhat.com/errata/RHSA-2026:13978https://access.redhat.com/errata/RHSA-2026:14087https://access.redhat.com/errata/RHSA-2026:15968https://access.redhat.com/errata/RHSA-2026:17482https://access.redhat.com/errata/RHSA-2026:19143https://access.redhat.com/errata/RHSA-2026:19356https://access.redhat.com/errata/RHSA-2026:21686https://access.redhat.com/errata/RHSA-2026:22316https://access.redhat.com/errata/RHSA-2026:22317https://access.redhat.com/errata/RHSA-2026:22323https://access.redhat.com/errata/RHSA-2026:22710https://access.redhat.com/errata/RHSA-2026:22716