CVE-2026-12547

EUVD-2026-46361
SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.4 LOW
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 12.55%
Debian logo
Debian Releases
Debian Product
Codename
libsoup2.4
bookworm
postponed
trixie
no-dsa
libsoup3
bookworm
postponed
forky
vulnerable
sid
3.8.0-2
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libsoup2.4
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
xenial
needs-triage
libsoup3
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libsoup-3_0-0
suse enterprise desktop 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.56.1
fixed
libsoup-devel
suse enterprise desktop 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.56.1
fixed
libsoup-lang
suse enterprise desktop 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.56.1
fixed
typelib-1_0-Soup-3_0
suse enterprise desktop 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.52.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.56.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.56.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
libsoup
Amazon Linux 2
0:2.56.0-6.amzn2.0.9
fixed
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.15
fixed
libsoup-debuginfo
Amazon Linux 2
0:2.56.0-6.amzn2.0.9
fixed
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.15
fixed
libsoup-debugsource
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.15
fixed
libsoup-devel
Amazon Linux 2
0:2.56.0-6.amzn2.0.9
fixed
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.15
fixed
libsoup-doc
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.15
fixed
libsoup3
Amazon Linux 2023
0:3.7.2-1.amzn2023
fixed
libsoup3-debuginfo
Amazon Linux 2023
0:3.7.2-1.amzn2023
fixed
libsoup3-debugsource
Amazon Linux 2023
0:3.7.2-1.amzn2023
fixed
libsoup3-devel
Amazon Linux 2023
0:3.7.2-1.amzn2023
fixed
libsoup3-doc
Amazon Linux 2023
0:3.7.2-1.amzn2023
fixed
Common Weakness Enumeration
References
https://access.redhat.com/security/cve/CVE-2026-12547
https://bugzilla.redhat.com/show_bug.cgi?id=2489994
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/506