CVSS 3.1
7.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:NCVE-2026-111456 Candlepin: consumer certificate can register systems in another organization
High (7.1) in red hat. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
On this page
A missing authorization check has been found in ConsumerResource.setupOwner() function of consumer registration module in the Candlepin package. The registration method checks permission to create a consumer only when the caller is a user. A consumer that authenticates with its identity certificate does not go through that check. A low-privileged network attacker or user who has a valid consumer certificate for one organization can register a new consumer in a different organization by supplying that organization's key. The response includes an identity certificate for the new consumer. With that certificate, the attacker can view the target organization's subscription pools. When the organization is not using simple content access, the attacker can attach that organization's entitlements to the new consumer.
Severity
- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 14th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-639 Authorization Bypass Through User-Controlled Key
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- Assigned by
- redhat (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- red hat:red hat satellite 6.16 for rhel 8
- red hat:red hat satellite 6.16 for rhel 9
- red hat:red hat satellite 6.17 for rhel 9
- red hat:red hat satellite 6.18 for rhel 9
- red hat:red hat satellite 6.19 for rhel 9
Versions
From the CNA's record in the CVE List.
Fixed in
| Product | Fixed in |
|---|---|
| Red Hat Satellite 6.16 for RHEL 8 | 0:4.4.26-2.el8sat |
| Red Hat Satellite 6.16 for RHEL 9 | 0:4.4.26-2.el9sat |
| Red Hat Satellite 6.17 for RHEL 9 | 0:4.4.26-2.el9sat |
| Red Hat Satellite 6.18 for RHEL 9 | 0:4.6.7-2.el9sat |
| Red Hat Satellite 6.19 for RHEL 9 | 0:4.7.7-2.el9sat |
Fix and patched versions
- Red Hat Red Hat Satellite 6.16 for RHEL 8: fixed in 0:4.4.26-2.el8sat
- Red Hat Red Hat Satellite 6.16 for RHEL 9: fixed in 0:4.4.26-2.el9sat
- Red Hat Red Hat Satellite 6.17 for RHEL 9: fixed in 0:4.4.26-2.el9sat
- Red Hat Red Hat Satellite 6.18 for RHEL 9: fixed in 0:4.6.7-2.el9sat
- Red Hat Red Hat Satellite 6.19 for RHEL 9: fixed in 0:4.7.7-2.el9sat
- Red Hat: fixed package versions per release
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Red Hat | satellite:6.16::el8 | candlepin, candlepin-selinux | 0:4.4.26-2.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8 | foreman, foreman-cli, foreman-ec2 and 12 more | 0:3.12.0.26-1.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8 | rubygem-crass | 0:1.0.8-1.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8 | rubygem-katello | 0:4.14.0.24-1.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8 | rubygem-puma, rubygem-puma-debuginfo, rubygem-puma-debugsource | 0:6.4.3-2.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8 | rubygem-safemode | 0:1.5.0-3.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8, satellite_capsule:6.16::el8 | python-pulp-rpm, python3.11-pulp-rpm | 0:3.26.9-1.el8pc | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8, satellite_capsule:6.16::el8 | python-pulpcore, python3.11-pulpcore | 0:3.49.39-5.el8pc | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8, satellite_capsule:6.16::el8 | python-pyjwt, python3.11-pyjwt, python3.11-pyjwt+crypto | 0:2.15.1-1.el8pc | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8, satellite_capsule:6.16::el8 | python-pysequoia, python3.11-pysequoia | 0:0.1.35-1.el8pc | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el8, satellite_capsule:6.16::el8 | rubygem-smart_proxy_dynflow | 0:0.9.3-2.el8sat | RHSA-2026:99949 |
| Red Hat | satellite:6.16::el9 | candlepin, candlepin-selinux | 0:4.4.26-2.el9sat | RHSA-2026:99949 |
| 68 more for Red Hat in the JSON and on Red Hat's page. | ||||
From the distributions' data via OSV.dev: Red Hat Security Data © Red Hat, Inc., CC BY 4.0. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Red Hat.
Red Hat
Red Hat rates this Important.
Red Hat Product Security has rated this vulnerability with an Important security impact. This vulnerability affects candlepin's consumer registration handling.
The attacker needs a valid consumer identity certificate and the key of another organization. SSL client authentication is enabled by default. The deployment must contain more than one organization.
The vulnerable check was introduced in candlepin 0.4.7, when owner authorization during registration was limited to user principals so that activation-key registration could succeed. Candlepin versions from 0.4.7 onward contain the check.
Red Hat Satellite 6.16 and 6.17 ships Candlepin 4.4.25. Satellite 6.18 ships 4.6.6, Satellite 6.19 ships 4.7.5. All Satellite versions are affected. Registered systems reach this API with their consumer certificates in the default Satellite configuration.
There is no configuration switch that stops a consumer certificate from calling registration while leaving normal consumer check-ins working. Restricting which clients can reach the Candlepin port limits who can attempt the call, and it does not stop a client that already has a valid consumer certificate and is allowed to use the API. Customers are advised to apply the relevant security updates when they become available.
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Satellite 6.16 for RHEL 8 | candlepin-0:4.4.26-2.el8sat | Fixed 2026-11-12 | RHSA-2026:99949 |
| Red Hat Satellite 6.16 for RHEL 9 | candlepin-0:4.4.26-2.el9sat | Fixed 2026-11-12 | RHSA-2026:99949 |
| Red Hat Satellite 6.17 for RHEL 9 | candlepin-0:4.4.26-2.el9sat | Fixed 2026-11-12 | RHSA-2026:99950 |
| Red Hat Satellite 6.18 for RHEL 9 | candlepin-0:4.6.7-2.el9sat | Fixed 2026-11-12 | RHSA-2026:99952 |
Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-111456.