RHEL 9 : Red Hat OpenStack Services on OpenShift 18.0 (openstack-keystone) (RHSA-2026:39808)

high Nessus Plugin ID 327103

Synopsis

The remote Red Hat host is missing one or more security updates for Red Hat OpenStack Services on OpenShift 18.0 (openstack-keystone).

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:39808 advisory.

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

Security Fix(es):

* Keystone: OpenStack Keystone: Unauthorized cross-project access due to improper validation in EC2 credential creation (CVE-2026-43001)

* Keystone: OpenStack Keystone: Unauthorized access due to incorrect LDAP user status handling (CVE-2026-40683)

* OpenStack Keystone: Privilege escalation through EC2 credential creation (CVE-2026-33551)

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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL Red Hat OpenStack Services on OpenShift 18.0 (openstack-keystone) package based on the guidance in RHSA-2026:39808.

Plugin Details

Severity: High

ID: 327103

File Name: redhat-RHSA-2026-39808.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/16/2026

Updated: 7/16/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.44

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:H/Au:M/C:C/I:C/A:C

CVSS Score Source: CVE-2026-43001

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:openstack-keystone, p-cpe:/a:redhat:enterprise_linux:python3-keystone, cpe:/o:redhat:enterprise_linux:9

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/15/2026

Vulnerability Publication Date: 4/10/2026

Reference Information

CVE: CVE-2026-33551, CVE-2026-40683, CVE-2026-43001

CWE: 1288, 266, 843

RHSA: 2026:39808

Detections

Analytics