RHSA-2026:11747 - Security Advisory

Topic

Red Hat OpenStack Services on OpenShift (RHOSO) 18.0.18 containers are now available.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Red Hat OpenStack Services on OpenShift is a hybrid cloud solution
for deploying and managing virtualized and containerized applications in a
scalable infrastructure with a Red Hat OpenShift Container Platform (RHOCP)
control plane.

Security Fixes:

• golang: Unexpected session resumption in crypto/tls (CVE-2025-68121)
• golang: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)
• golang: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update as a new RHOSO 18.0 deployment, see “Deploying Red Hat OpenStack Services on OpenShift” at https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html/deploying_red_hat_openstack_services_on_openshift/index

For details on how to apply this update to an existing RHOSO 18.0 deployment, see “Updating your environment to the latest maintenance release” at https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html/updating_your_environment_to_the_latest_maintenance_release/index

Fixes

• OSPRH-26192 - [edpm-ansible][edpm_ovn] tenant_ip should not be mandatory
• OSPRH-16588 - Increase RabbitMQ Memory high watermark setting
• OSPRH-21328 - Some edpm-ansible roles depend on dataplane service names instead of using the edpmServiceType
• OSPRH-25860 - During RHOSO minor update, Wrong status seen for OVNdataplane
• OSPRH-26805 - openstack-operator sets Octavia ApplicationCredentialSecret on wrong spec path
• OSPRH-26807 - openstack-operator does not propagate role changes to KeystoneApplicationCredential CRs
• OSPRH-27068 - Ceilometer Compute TLS does not get correctly configured
• OSPRH-28537 - [RHOSO18.0] Netconfig is immutable after having been applied
• OSPRH-27237 - RHOSO 18.0.15 Upgrade Triggered Load Balancer Amphora to Enter ERROR State
• OSPRH-26632 - Telemetry - node_exporter - unable to expose filesystems usage
• OSPRH-16941 - "Load empty ruleset" doesn't work in all situations because of nftables specifics
• OSPRH-28209 - mariadb-operator does not quote cached DB credentials, leading to service disruption.
• OSPRH-29026 - openstack-operator scrambles webhooks service paths

CVEs

• CVE-2025-61726
• CVE-2025-68121
• CVE-2026-25679

References

• https://access.redhat.com/security/updates/classification/
• https://catalog.redhat.com/software/containers/search