CVE-2026-102556

EUVD-2026-89031
A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap corruption or a crash upon receiving a crafted Pong.
Type Confusion
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 40.95%
Affected Products (NVD)
VendorProductVersion
gnomelibsoup
𝑥
< 3.7.3
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
vulnerable
trixie
no-dsa
libsoup3
bookworm
postponed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libsoup2.4
bionic
Fixed in 2.62.1-1ubuntu0.4+esm10
released
focal
Fixed in 2.70.0-1ubuntu0.5+esm5
released
jammy
Fixed in 2.74.2-3ubuntu0.10
released
noble
Fixed in 2.74.3-6ubuntu1.10
released
resolute
Fixed in 2.74.3-10.1ubuntu5+esm4
released
stonking
needs-triage
xenial
not-affected
libsoup3
jammy
Fixed in 3.0.7-0ubuntu1+esm10
released
noble
Fixed in 3.4.4-5ubuntu0.10
released
resolute
Fixed in 3.6.6-1ubuntu0.2
released
stonking
Fixed in 3.6.6-1ubuntu3.1
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libsoup-2_4-1
suse enterprise desktop 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise sap 12 SP5
2.62.2-5.49.1
fixed
suse enterprise sap 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise sap 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise server 12 SP3
2.62.2-5.49.1
fixed
suse enterprise server 12 SP5
2.62.2-5.49.1
fixed
suse enterprise server 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise server 15 SP7
2.74.3-150600.4.42.1
fixed
libsoup-2_4-1-32bit
suse enterprise sap 12 SP5
2.62.2-5.49.1
fixed
suse enterprise server 12 SP3
2.62.2-5.49.1
fixed
suse enterprise server 12 SP5
2.62.2-5.49.1
fixed
libsoup-3_0-0
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
libsoup-devel
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 12 SP5
2.62.2-5.49.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 12 SP3
2.62.2-5.49.1
fixed
suse enterprise server 12 SP5
2.62.2-5.49.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
libsoup-lang
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 12 SP5
2.62.2-5.49.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 12 SP3
2.62.2-5.49.1
fixed
suse enterprise server 12 SP5
2.62.2-5.49.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
libsoup2-devel
suse enterprise desktop 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise sap 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise sap 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise server 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise server 15 SP7
2.74.3-150600.4.42.1
fixed
libsoup2-lang
suse enterprise desktop 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise sap 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise sap 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise server 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise server 15 SP7
2.74.3-150600.4.42.1
fixed
typelib-1_0-Soup-2_4
suse enterprise desktop 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise sap 12 SP5
2.62.2-5.49.1
fixed
suse enterprise sap 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise sap 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise sap 15 SP7
2.74.3-150600.4.42.1
fixed
suse enterprise server 12 SP3
2.62.2-5.49.1
fixed
suse enterprise server 12 SP5
2.62.2-5.49.1
fixed
suse enterprise server 15 SP4
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP5
2.74.3-150400.3.43.1
fixed
suse enterprise server 15 SP6
2.74.3-150600.4.42.1
fixed
suse enterprise server 15 SP7
2.74.3-150600.4.42.1
fixed
typelib-1_0-Soup-3_0
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
libsoup
RHEL 8
0:2.62.3-19.el8_10
fixed
RHEL 8.4 AUS
0:2.62.3-2.el8_4.14
fixed
RHEL 8.6 AUS
0:2.62.3-2.el8_6.14
fixed
RHEL 8.8 E4S
0:2.62.3-3.el8_8.15
fixed
RHEL 8.8 TUS
0:2.62.3-3.el8_8.15
fixed
RHEL 9
0:2.72.0-17.el9_9.6
fixed
libsoup-devel
RHEL 8
0:2.62.3-19.el8_10
fixed
RHEL 8.4 AUS
0:2.62.3-2.el8_4.14
fixed
RHEL 8.6 AUS
0:2.62.3-2.el8_6.14
fixed
RHEL 8.8 E4S
0:2.62.3-3.el8_8.15
fixed
RHEL 8.8 TUS
0:2.62.3-3.el8_8.15
fixed
RHEL 9
0:2.72.0-17.el9_9.6
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
libsoup
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.16
fixed
libsoup-debuginfo
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.16
fixed
libsoup-debugsource
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.16
fixed
libsoup-devel
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.16
fixed
libsoup-doc
Amazon Linux 2023
0:2.72.0-6.amzn2023.0.16
fixed
libsoup3
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-debuginfo
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-debugsource
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-devel
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-doc
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
libsoup
Azure Linux 3.0
0:3.4.4-17.azl3
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://access.redhat.com/errata/RHSA-2026:83384
https://access.redhat.com/errata/RHSA-2026:83618
https://access.redhat.com/errata/RHSA-2026:84586
https://access.redhat.com/errata/RHSA-2026:92347
https://access.redhat.com/errata/RHSA-2026:93445
https://access.redhat.com/errata/RHSA-2026:93446
https://access.redhat.com/errata/RHSA-2026:93447
https://access.redhat.com/errata/RHSA-2026:93465
https://access.redhat.com/errata/RHSA-2026:93466
https://access.redhat.com/errata/RHSA-2026:93583
https://access.redhat.com/errata/RHSA-2026:93716
https://access.redhat.com/errata/RHSA-2026:98453
https://access.redhat.com/errata/RHSA-2026:98560
https://access.redhat.com/security/cve/CVE-2026-102556
https://bugzilla.redhat.com/show_bug.cgi?id=2543229