Improper Certificate Validation in Traefik - CVE-2025-68121

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Main Vulnerability Database Vulnerabilities #VU123129

Improper Certificate Validation in Traefik - CVE-2025-68121

Published: February 23, 2026 / Updated: March 16, 2026


Vulnerability identifier: #VU123129
CSH Severity: High
CVSS v4 BT: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-68121
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper certificate validation within HTTP/3 connections. A remote attacker can cause cause a client to resume a session with a server that it would not have resumed with during the initial handshake


Affected software

Traefik
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data
Splunk Operator for Kubernetes Add-on
App Connect Enterprise Certified Container
Red Hat OpenStack
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Red Hat Enterprise Linux for ARM 64
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Development Tools Module
openSUSE Leap
openEuler
Go programming language
Data Virtualization (DV) on Cloud Pak for Data (CPD)
Guardium Data Security Center (GDSC)
DataStage on Cloud Pak for Data
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
toolbox-tests
toolbox
rhc-worker-playbook (Red Hat package)
rhc (Red Hat package)
udica
yggdrasil (Red Hat package)
python-pyasn1 (Red Hat package)
gvisor-tap-vsock (Red Hat package)
golang-github-openprinting-ipp-usb (Red Hat package)
opentelemetry-collector (Red Hat package)
containernetworking-plugins (Red Hat package)
slirp4netns
runc (Red Hat package)
runc
oci-seccomp-bpf-hook
containernetworking-plugins
aardvark-dns
netavark
skopeo (Red Hat package)
fuse-overlayfs
crun
skopeo
skopeo-tests
golang-help
golang-devel
golang
skopeo-doc
golang-bin
golang-tests
golang-src
golang-misc
golang-docs
golang-shared
go1.24-openssl-doc
go1.24-openssl-race
go1.24-openssl
go1.24-doc
go1.24
go1.24-race
go1.24-openssl-debuginfo
delve
delve (Red Hat package)
golang (Red Hat package)
golang-race
go-toolset
go1.25-openssl-doc
go1.25-openssl-race
go1.25-openssl
go1.25-openssl-debuginfo
go1.25-race
go1.25-doc
go1.25
buildah (Red Hat package)
buildah-tests
buildah
containers-common
conmon
container-selinux
git-lfs
git-lfs-doc
etcd (Red Hat package)
git-lfs (Red Hat package)
criu-libs
criu-devel
python3-criu
criu
crit
libslirp-devel
libslirp
podman (Red Hat package)
python3-podman
podman-docker
podman-tests
podman-remote
podman-plugins
podman-gvproxy
podman-catatonit
podman
ose-aws-ecr-image-credential-provider (Red Hat package)
ose-azure-acr-image-credential-provider (Red Hat package)
ose-gcp-gcr-image-credential-provider (Red Hat package)
openshift (Red Hat package)
openshift-clients (Red Hat package)
grafana-pcp (Red Hat package)
grafana-pcp
kernel (Red Hat package)
grafana (Red Hat package)
grafana-selinux
grafana
image-builder (Red Hat package)
cockpit-podman
osbuild-composer (Red Hat package)
osbuild-composer-core
osbuild-composer
osbuild-composer-worker
Splunk Enterprise
Oracle TimesTen In-Memory Database
Red Hat OpenShift Container Platform

How to mitigate CVE-2025-68121

Install updates from vendor's website.

Traefik - addressed in versions 2.11.37, 3.6.8
Go programming language - addressed in versions 1.24.13, 1.25.7
Guardium Data Security Center (GDSC) - update to 3.8.8
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data - update to 5.3.1 Patch 2
Splunk Enterprise - addressed in versions 9.3.12, 9.4.11, 10.0.6, 10.2.3
toolbox-tests - update to 0.0.99.5.1-1.0.1
toolbox - update to 0.0.99.5.1-1.0.1
rhc-worker-playbook (Red Hat package) - addressed in versions 0.2.3-3.el10_0, 0.2.3-3.el10_1
rhc (Red Hat package) - addressed in versions 0.2.5-4.el8_10, 0.3.2-2.el10_0, 0.3.4-2.el10_1
udica - update to 0.2.6-21
yggdrasil (Red Hat package) - addressed in versions 0.4.7-2.el10_0, 0.4.8-3.el10_1
python-pyasn1 (Red Hat package) - update to 0.5.1-4.el9
gvisor-tap-vsock (Red Hat package) - addressed in versions 0.7.3-5.el9_4.3, 0.8.5-2.el9_6.1, 0.8.5-2.el10_0.1
golang-github-openprinting-ipp-usb (Red Hat package) - update to 0.9.27-5.el10_1
opentelemetry-collector (Red Hat package) - addressed in versions 0.144.0-1.el9_4, 0.144.0-1.el9_6, 0.144.0-1.el9_7, 0.144.0-1.el10_0, 0.144.0-1.el10_1
containernetworking-plugins (Red Hat package) - addressed in versions 1.2.0-3.el9_2.3, 1.4.0-6.rhaos4.14.el8, 1.4.0-6.rhaos4.15.el8, 1.4.0-7.rhaos4.13.el8, 1.6.2-3.el9_6
slirp4netns - update to 1.2.3-1
runc (Red Hat package) - addressed in versions 1.2.5-5.rhaos4.19.el9, 1.2.9-1.el9_2.2, 1.2.9-1.el9_4.1, 1.2.9-3.el9_6, 1.2.9-5.rhaos4.18.el9, 1.4.0-2.el9_7
runc - update to 1.2.9-4
oci-seccomp-bpf-hook - update to 1.2.10-1
containernetworking-plugins - update to 1.4.0-8.0.1
aardvark-dns - update to 1.10.1-2.0.1
netavark - update to 1.10.3-1.0.1
skopeo (Red Hat package) - addressed in versions 1.11.3-6.rhaos4.13.el8, 1.11.3-6.rhaos4.13.el9, 1.11.3-7.rhaos4.14.el8, 1.11.3-7.rhaos4.14.el9, 1.11.3-8.rhaos4.15.el8, 1.11.3-9.rhaos4.15.el9, 1.11.4-0.1.el9_2.6, 1.14.5-2.el9_4.4, 1.16.1-5.rhaos4.18.el9, 1.18.1-3.el10_0.1, 1.18.1-5.el9_6, 1.18.1-5.rhaos4.19.el9, 1.20.0-3.el10_1
fuse-overlayfs - update to 1.13-1.0.1
crun - update to 1.14.3-2
skopeo - addressed in versions 1.14.5-7, 1.17.0-4
skopeo-tests - addressed in versions 1.14.5-7, 1.17.0-4
golang-help - addressed in versions 1.15.7-59, 1.17.3-47, 1.21.4-42, 1.21.4-43, 1.21.4-45
golang-devel - addressed in versions 1.15.7-59, 1.17.3-47, 1.21.4-42, 1.21.4-43, 1.21.4-45
golang - addressed in versions 1.15.7-59, 1.17.3-47, 1.21.4-42, 1.21.4-43, 1.21.4-45
skopeo-doc - update to 1.17.0-4
golang-bin - addressed in versions 1.24.13-1, 1.25.7-1.0.1
golang-tests - addressed in versions 1.24.13-1, 1.25.7-1.0.1
golang-src - addressed in versions 1.24.13-1, 1.25.7-1.0.1
golang-misc - addressed in versions 1.24.13-1, 1.25.7-1.0.1
golang-docs - addressed in versions 1.24.13-1, 1.25.7-1.0.1
golang-shared - update to 1.24.13-1
golang - addressed in versions 1.24.13-1, 1.25.7-1.0.1
go1.24-openssl-doc - addressed in versions 1.24.13-150000.1.23.1, 1.24.13-150600.13.18.1
go1.24-openssl-race - addressed in versions 1.24.13-150000.1.23.1, 1.24.13-150600.13.18.1
go1.24-openssl - addressed in versions 1.24.13-150000.1.23.1, 1.24.13-150600.13.18.1
go1.24-doc - update to 1.24.13-150000.1.56.1
go1.24 - update to 1.24.13-150000.1.56.1
go1.24-race - update to 1.24.13-150000.1.56.1
go1.24-openssl-debuginfo - update to 1.24.13-150600.13.18.1
delve - update to 1.25.2-1.0.2
delve (Red Hat package) - addressed in versions 1.25.2-2.el10_0, 1.25.2-2.el10_1
golang (Red Hat package) - addressed in versions 1.25.7-1.el9_6, 1.25.7-1.el9_7, 1.25.7-1.el10_0, 1.25.7-1.el10_1, 1.25.9-1.el9_2
golang-race - update to 1.25.7-1.0.1
go-toolset - update to 1.25.7-1.0.1
go1.25-openssl-doc - addressed in versions 1.25.7-150000.1.15.1, 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1
go1.25-openssl-race - addressed in versions 1.25.7-150000.1.15.1, 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1
go1.25-openssl - addressed in versions 1.25.7-150000.1.15.1, 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1
go1.25-openssl-debuginfo - addressed in versions 1.25.7-150000.1.15.1, 1.25.8-150000.1.18.1, 1.25.8-150600.13.15.1
go1.25-race - update to 1.25.7-150000.1.29.1
go1.25-doc - update to 1.25.7-150000.1.29.1
go1.25 - update to 1.25.7-150000.1.29.1
buildah (Red Hat package) - addressed in versions 1.26.11-1.el9_0, 1.29.7-1.el9_2.5, 1.39.6-2.el9_6, 1.39.8-1.el10_0, 1.41.8-2.el9_7, 1.41.8-2.el10_1
buildah-tests - update to 1.33.14-3
buildah - update to 1.33.14-3
containers-common - update to 1-82.0.1
conmon - update to 2.1.10-1
container-selinux - update to 2.229.0-2
Splunk Operator for Kubernetes Add-on - update to 3.1.0
git-lfs - addressed in versions 3.4.1-8.0.1, 3.7.1-3
git-lfs-doc - addressed in versions 3.4.1-8.0.1, 3.7.1-3
etcd (Red Hat package) - update to 3.4.26-9.5.el9ost
git-lfs (Red Hat package) - addressed in versions 3.6.1-2.el9_6.2, 3.6.1-2.el10_0.2, 3.6.1-7.el9_7, 3.6.1-7.el10_1
criu-libs - update to 3.18-5.0.1
criu-devel - update to 3.18-5.0.1
python3-criu - update to 3.18-5.0.1
criu - update to 3.18-5.0.1
crit - update to 3.18-5.0.1
libslirp-devel - update to 4.4.0-2
libslirp - update to 4.4.0-2
podman (Red Hat package) - addressed in versions 4.4.1-19.rhaos4.13.el8, 4.4.1-20.rhaos4.13.el9, 4.4.1-22.el9_2.11, 4.4.1-25.rhaos4.14.el8, 4.4.1-25.rhaos4.14.el9, 4.4.1-39.rhaos4.15.el8, 4.9.4-20.el9_4.2, 5.2.2-11.rhaos4.18.el8, 5.4.0-15.el10_0.1, 5.4.0-20.el9_6.2, 5.6.0-12.el10_1, 5.6.0-14.el9_7
python3-podman - update to 4.9.0-3
podman-docker - update to 4.9.4-30.0.1
podman-tests - update to 4.9.4-30.0.1
podman-remote - update to 4.9.4-30.0.1
podman-plugins - update to 4.9.4-30.0.1
podman-gvproxy - update to 4.9.4-30.0.1
podman-catatonit - update to 4.9.4-30.0.1
podman - update to 4.9.4-30.0.1
Red Hat OpenShift Container Platform - addressed in versions 4.13.68, 4.14.68, 4.15.66, 4.18.37, 4.18.42, 4.19.27
ose-aws-ecr-image-credential-provider (Red Hat package) - addressed in versions 4.14.0-202606041348.p2.g9a7820e.assembly.stream.el8, 4.14.0-202606041348.p2.g9a7820e.assembly.stream.el9, 4.15.0-202606040938.p2.gfd77d92.assembly.stream.el8, 4.15.0-202606040938.p2.gfd77d92.assembly.stream.el9
ose-azure-acr-image-credential-provider (Red Hat package) - addressed in versions 4.15.0-202606040938.p2.g0d799a2.assembly.stream.el8, 4.15.0-202606040938.p2.g0d799a2.assembly.stream.el9
ose-gcp-gcr-image-credential-provider (Red Hat package) - addressed in versions 4.15.0-202606040938.p2.gfc50272.assembly.stream.el8, 4.15.0-202606040938.p2.gfc50272.assembly.stream.el9
openshift (Red Hat package) - update to 4.19.0-202603122218.p2.ga674efa.assembly.stream.el9
openshift-clients (Red Hat package) - addressed in versions 4.19.0-202603132148.p2.gb2a93a6.assembly.stream.el8, 4.19.0-202603132148.p2.gb2a93a6.assembly.stream.el9
grafana-pcp (Red Hat package) - addressed in versions 5.1.1-5.el9_2.1, 5.1.1-12.el8_10, 5.2.2-4.el10_0, 5.3.0-2.el10_1
grafana-pcp - update to 5.1.1-12
kernel (Red Hat package) - update to 5.14.0-570.103.1.el9_6
grafana (Red Hat package) - addressed in versions 9.0.9-12.el9_2, 9.2.10-27.el9_4, 9.2.10-28.el8_10, 10.2.6-18.el9_6, 10.2.6-18.el9_7, 10.2.6-21.el10_0, 10.2.6-22.el10_1
grafana-selinux - update to 9.2.10-28.0.1
grafana - update to 9.2.10-28.0.1
App Connect Enterprise Certified Container - addressed in versions 12.0.22, 13.0.0
Red Hat OpenStack - update to 17.1
image-builder (Red Hat package) - addressed in versions 31-3.el9_7, 31-4.el10_1, 52.1-1.el10_2
cockpit-podman - update to 84.1-1
osbuild-composer (Red Hat package) - addressed in versions 101.4-4.el8_10, 132.2-6.el9_6, 134.1-6.el10_0, 149-4.el9_7, 149-5.el10_1
osbuild-composer-core - update to 149-4
osbuild-composer - update to 149-4
osbuild-composer-worker - update to 149-4

External References

Related Security Bulletins