RHSA-2026:28044 - Security Advisory

Topic

An update for openstack-keystone is now available for Red Hat OpenStack
Platform 17.1 (Wallaby).

Red Hat Product Security has rated this update as having a security impact
of Low. 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

Keystone is a Python implementation of the OpenStack
(http://www.openstack.org) identity service API.

Security Fix(es):

• OpenStack Keystone: Privilege escalation through EC2 credential creation

(CVE-2026-33551)

• OpenStack Keystone: Unauthenticated access to EC2/S3 token endpoints can grant Keystone authorization (CVE-2025-65073)

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

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat OpenStack 17.1 for RHEL 9 x86_64

Fixes

• BZ - 2415344 - CVE-2025-65073 openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature validation flaw
• BZ - 2451037 - CVE-2026-33551 openstack-keystone: OpenStack Keystone: Privilege escalation through EC2 credential creation

CVEs

• CVE-2025-65073
• CVE-2026-33551

References

• https://access.redhat.com/security/updates/classification/#important