Description
An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0. Restricted application credentials can create EC2 credentials. By using a restricted application credential to call the EC2 credential creation API, an authenticated user with only a reader role may obtain an EC2/S3 credential that carries the full set of the parent user's S3 permissions, effectively bypassing the role restrictions imposed on the application credential. Only deployments that use restricted application credentials in combination with the EC2/S3 compatibility API (swift3 / s3api) are affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenStack | Keystone | 14.0.0 – < 26.1.1, 27.0.0, 28.0.0, 29.0.0 | 26.1.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | keystone | 2:29.0.0-2 | — |
| Debian 13 | keystone | 2:27.0.0-3+deb13u3 | — |
| Debian 12 | keystone | 2:22.0.2-0+deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | keystone | 2:29.0.0-0ubuntu1.2 | — |
| Ubuntu 25.10 | keystone | 2:28.0.0-0ubuntu1.3 | — |
| Ubuntu 24.04 LTS | keystone | 2:25.0.0-0ubuntu1.4 | — |
| Ubuntu 22.04 LTS | keystone | 2:21.0.1-0ubuntu2.4 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | keystone | No fix yet | — |
| Ubuntu Pro 18.04 LTS | keystone | No fix yet | — |
| Ubuntu Pro 16.04 LTS | keystone | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 18 | python3-keystone +1 | 1:23.0.3-18.0.20260610133808.9e3dfb4.el9ost | RHSA-2026:39808 |
| Red Hat OpenStack 17 | python3-keystone +1 | 1:19.0.2-17.1.20260529190847.54dd95d.el9ost | RHSA-2026:28044 |
| Red Hat OpenStack 17 | python3-swift +5 | 2.27.1-17.1.20231004180819.el9ost | RHSA-2026:28044 |
| Red Hat OpenStack 17 | python3-tempest +3 | 1:33.0.0-17.1.20260406141650.1580f6f.el9ost | RHSA-2026:28044 |
| Red Hat OpenStack 16 | collectd-sensubility | 0.2.1-1.1.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | erlang +20 | 23.3.4.18-2.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | etcd | 3.3.23-22.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | python-oslo-messaging +1 | 10.2.4-2.20260710155333.82281a0.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | python-pyasn1 +2 | 0.4.6-4.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | python3-glance +1 | 1:19.0.5-2.20260512165254.eb6ad61.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | python3-keystone +1 | 1:16.0.3-2.20260616134936.9d699a7.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack 16 | python3-nova +11 | 1:20.6.2-2.20260317135026.8a24acd.el8ost | RHSA-2026:54757 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat OpenStack 13 | python-keystone +1 | 1:13.0.4-10.el7ost | RHSA-2026:94039 |
| Red Hat OpenStack 13 | python-nova +15 | 1:17.0.13-43.el7ost | RHSA-2026:94039 |
| Red Hat OpenStack 13 | python-webob | 1.7.2-2.el7ost | RHSA-2026:94039 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | keystone | >= 14.0.0, < 26.1.1 | 26.1.1 | GHSA-4phw-6824-6cfp |
Advisories 4
- RHSA-2026:94039 Red Hat Security Advisory: Red Hat OpenStack Platform 13.0 security advisory Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:54757 Red Hat Security Advisory: Red Hat OpenStack Platform 16.2 security advisory Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:39808 Red Hat Security Advisory: Red Hat OpenStack Services on OpenShift 18.0 (openstack-keystone) security update Red Hat Security Advisories (RHSA) · Sep 26, 2026
- RHSA-2026:28044 Red Hat Security Advisory: Red Hat OpenStack Platform 17.1 (openstack-keystone) security update Red Hat Security Advisories (RHSA) · Sep 26, 2026