CVE-2026-5119

EUVD-2026-17062
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
gnomelibsoup
-
redhatenterprise_linux
7.0
redhatenterprise_linux
8.0
redhatenterprise_linux
9.0
redhatenterprise_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libsoup2.4
bookworm
no-dsa
bullseye
vulnerable
bullseye (security)
vulnerable
trixie
no-dsa
libsoup3
bookworm
no-dsa
forky
vulnerable
sid
vulnerable
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libsoup2.4
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
needs-triage
resolute
needs-triage
xenial
needs-triage
libsoup3
jammy
needs-triage
noble
needs-triage
questing
needs-triage
resolute
needs-triage
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
libsoup
RHEL 8
0:2.62.3-14.el8_10
fixed
RHEL 9
0:2.72.0-12.el9_7.6
fixed
libsoup-devel
RHEL 8
0:2.62.3-14.el8_10
fixed
RHEL 9
0:2.72.0-12.el9_7.6
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
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/security/cve/CVE-2026-5119
https://bugzilla.redhat.com/show_bug.cgi?id=2452932
https://gitlab.gnome.org/GNOME/libsoup/-/issues/502