CVE-2023-1636: A vulnerability was found in OpenStack Barbican containers

Routine

MEDIUM 6.0WATCHLISTMITIGATEDOWNGRADE

CVE-2023-1636 is a medium-severity flaw (CVSS 6.0) affecting barbican, openstack platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in OpenStack Barbican containers. This vulnerability is only applicable to deployments that utilize an all-in-one configuration. Barbican containers share the same CGROUP, USER, and NET namespace with the host system and other OpenStack services. If any service is compromised, it could gain access to the data transmitted to and from Barbican.

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.0 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-653
Published	2023-09-24
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: openstack · redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-09-24 01:15 UTCPublished CVE record published
2026-06-17 05:28 UTCUpdated Record last modified

openstack barbican MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy barbican || rpm -q barbican || barbican --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

redhat openstack platform DOWNGRADE

Affected: 16.1 · 16.2 · 17.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 16.1

1. Check installed version

apt-cache policy openstack-platform || rpm -q openstack-platform || openstack-platform --version

2. No fixed release: DOWNGRADE to a release before 16.1 (Debian / Ubuntu)

apt-cache madison openstack-platform sudo apt install openstack-platform=<VERSION_BEFORE_16.1> sudo apt-mark hold openstack-platform

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openstack-platform sudo dnf downgrade openstack-platform-<VERSION_BEFORE_16.1> sudo dnf versionlock add openstack-platform

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-1636?

barbican: mitigate or apply the listed mitigation; openstack platform: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-1636 being exploited?

CVE-2023-1636 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-1636 affect?

CVE-2023-1636 affects barbican, openstack platform. Severity is medium (CVSS 6.0). A vulnerability was found in OpenStack Barbican containers. This vulnerability is only applicable to deployments that utilize an all-in-one configuration. Barbican containers share the same CGROUP, USER, and NET namespace with the host syst

How urgent is CVE-2023-1636?

Priority 36/100. On your watchlist

Software pages

OpenStack vulnerabilities

Related CVEs

CVE-2023-1633 MEDIUM 6.6 MITIGATE DOWNGRADE A credentials leak flaw was found in OpenStack Barbican
CVE-2022-3100 MEDIUM 5.9 MITIGATE DOWNGRADE A flaw was found in the openstack-barbican component
CVE-2022-23452 MEDIUM 4.9 UPGRADE DOWNGRADE An authorization flaw was found in openstack-barbican, where anyone with an admin role could add secrets to a
CVE-2022-23451 HIGH 8.1 UPGRADE DOWNGRADE An authorization flaw was found in openstack-barbican

References

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