Rubygem-katello: improper authorization logic allows resource enumeration
Priority LOW 20CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 5 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-203.
Summary
A flaw was found in rubygem-katello. The RegistryProxiesController in Katello contains an authorization bypass vulnerability due to an execution fall-through in the registry_authorize filter. While the application identifies unauthorized requests and triggers an error response via the unauthorized method, it fails to halt the execution of the current code path (missing return statement). This failure in the control flow allows the application to proceed into subsequent business logic and database validation filters. Consequently, the application reveals its internal state through differential responses, allowing an unprivileged attacker to enumerate valid Users, Organizations, and Products across the entire instance.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00324 25th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 5 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Satellite 6.16 for RHEL 8 | — | 4.14.0.23-1.el8sat | Patch available | CNA |
| Red Hat | Red Hat Satellite 6.16 for RHEL 9 | — | 4.14.0.23-1.el9sat | Patch available | CNA |
| Red Hat | Red Hat Satellite 6.17 for RHEL 9 | — | 4.16.0.20-1.el9sat | Patch available | CNA |
| Red Hat | Red Hat Satellite 6.18 for RHEL 9 | — | 4.18.0.24-1.el9sat | Patch available | CNA |
| Red Hat | Red Hat Satellite 6.19 for RHEL 9 | — | 4.20.0.11-1.el9sat | Patch available | CNA |
| Red Hat | Red Hat Satellite 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Satellite 6 | — | — | No fix listed | CNA |
- Red Hat Satellite 6.16 for RHEL 8 VendorRed Hat Affected — Fixed in 4.14.0.23-1.el8sat Patch available CNA
- Red Hat Satellite 6.16 for RHEL 9 VendorRed Hat Affected — Fixed in 4.14.0.23-1.el9sat Patch available CNA
- Red Hat Satellite 6.17 for RHEL 9 VendorRed Hat Affected — Fixed in 4.16.0.20-1.el9sat Patch available CNA
- Red Hat Satellite 6.18 for RHEL 9 VendorRed Hat Affected — Fixed in 4.18.0.24-1.el9sat Patch available CNA
- Red Hat Satellite 6.19 for RHEL 9 VendorRed Hat Affected — Fixed in 4.20.0.11-1.el9sat Patch available CNA
- Red Hat Satellite 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Satellite 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:satellite:6.16::el8 | 6.16 | — | Red Hat |
| cpe:/a:redhat:satellite:6.16::el9 | 6.16 | — | Red Hat |
| cpe:/a:redhat:satellite_capsule:6.16::el8 | 6.16 | — | Red Hat |
| cpe:/a:redhat:satellite_capsule:6.16::el9 | 6.16 | — | Red Hat |
| cpe:/a:redhat:satellite_utils:6.16::el8 | 6.16 | — | Red Hat |
| cpe:/a:redhat:satellite_utils:6.16::el9 | 6.16 | — | Red Hat |
| cpe:/a:redhat:satellite:6.17::el9 | 6.17 | — | Red Hat |
| cpe:/a:redhat:satellite_capsule:6.17::el9 | 6.17 | — | Red Hat |
| cpe:/a:redhat:satellite_utils:6.17::el9 | 6.17 | — | Red Hat |
| cpe:/a:redhat:satellite:6.18::el9 | 6.18 | — | Red Hat |
- cpe:/a:redhat:satellite:6.16::el8 Versions 6.16 — ·Red Hat
- cpe:/a:redhat:satellite:6.16::el9 Versions 6.16 — ·Red Hat
- cpe:/a:redhat:satellite_capsule:6.16::el8 Versions 6.16 — ·Red Hat
- cpe:/a:redhat:satellite_capsule:6.16::el9 Versions 6.16 — ·Red Hat
- cpe:/a:redhat:satellite_utils:6.16::el8 Versions 6.16 — ·Red Hat
- cpe:/a:redhat:satellite_utils:6.16::el9 Versions 6.16 — ·Red Hat
- cpe:/a:redhat:satellite:6.17::el9 Versions 6.17 — ·Red Hat
- cpe:/a:redhat:satellite_capsule:6.17::el9 Versions 6.17 — ·Red Hat
- cpe:/a:redhat:satellite_utils:6.17::el9 Versions 6.17 — ·Red Hat
- cpe:/a:redhat:satellite:6.18::el9 Versions 6.18 — ·Red Hat
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:satellite_capsule:6.18::el9 | 6.18 | — | Red Hat |
| cpe:/a:redhat:satellite_utils:6.18::el9 | 6.18 | — | Red Hat |
| cpe:/a:redhat:satellite:6.19::el9 | 6.19 | — | Red Hat |
| cpe:/a:redhat:satellite_capsule:6.19::el9 | 6.19 | — | Red Hat |
| cpe:/a:redhat:satellite_utils:6.19::el9 | 6.19 | — | Red Hat |
| cpe:/a:redhat:satellite:6 | 6 | — | Red Hat |
- cpe:/a:redhat:satellite_capsule:6.18::el9 Versions 6.18 — ·Red Hat
- cpe:/a:redhat:satellite_utils:6.18::el9 Versions 6.18 — ·Red Hat
- cpe:/a:redhat:satellite:6.19::el9 Versions 6.19 — ·Red Hat
- cpe:/a:redhat:satellite_capsule:6.19::el9 Versions 6.19 — ·Red Hat
- cpe:/a:redhat:satellite_utils:6.19::el9 Versions 6.19 — ·Red Hat
- cpe:/a:redhat:satellite:6 Versions 6 — ·Red Hat
Remediation
Red Hat 4 advisories
- RHSA-2026:74506 Released 2026-10-01 · Red Hat rating CriticalSatellite 6.16.14 Async Update
- Red Hat Satellite 6.16 for RHEL 8 foreman-3.12.0.23-1.el8sat, foreman-cli-3.12.0.23-1.el8sat, foreman-debug-3.12.0.23-1.el8sat +32
- Red Hat Satellite 6.16 for RHEL 9 foreman-3.12.0.23-1.el9sat, foreman-cli-3.12.0.23-1.el9sat, foreman-debug-3.12.0.23-1.el9sat +32
- RHSA-2026:74505 Released 2026-10-01 · Red Hat rating CriticalSatellite 6.17.12 Async Update
- Red Hat Satellite 6.17 for RHEL 9 foreman-3.14.0.22-1.el9sat, foreman-cli-3.14.0.22-1.el9sat, foreman-debug-3.14.0.22-1.el9sat +31
- RHSA-2026:74504 Released 2026-10-01 · Red Hat rating CriticalSatellite 6.18.10 Async Update
- Red Hat Satellite 6.18 for RHEL 9 foreman-3.16.0.25-1.el9sat, foreman-cli-3.16.0.25-1.el9sat, foreman-debug-3.16.0.25-1.el9sat +26
Show 1 more Red Hat advisories
- RHSA-2026:74503 Released 2026-10-01 · Red Hat rating CriticalSatellite 6.19.5 Async Update
- Red Hat Satellite 6.19 for RHEL 9 foreman-3.18.0.14-1.el9sat, foreman-cli-3.18.0.14-1.el9sat, foreman-debug-3.18.0.14-1.el9sat +19
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Satellite 6 | Affected | No fix yet |
| Red Hat Satellite 6.16 for RHEL 8 | Fixed | RHSA-2026:74506 |
| Red Hat Satellite 6.16 for RHEL 9 | Fixed | RHSA-2026:74506 |
| Red Hat Satellite 6.17 for RHEL 9 | Fixed | RHSA-2026:74505 |
| Red Hat Satellite 6.18 for RHEL 9 | Fixed | RHSA-2026:74504 |
| Red Hat Satellite 6.19 for RHEL 9 | Fixed | RHSA-2026:74503 |
Not affected: 5 products
- Red Hat Satellite 6.16 for RHEL 8
- Red Hat Satellite 6.16 for RHEL 9
- Red Hat Satellite 6.17 for RHEL 9
- Red Hat Satellite 6.18 for RHEL 9
- Red Hat Satellite 6.19 for RHEL 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-56098
- 2026-10-03 Alias added: GHSA-f6cg-x72x-c392
References
More Red Hat vulnerabilities
- TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
- TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
- TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-56098 · CVE Program
- CVE-2026-56098 · NVD
- FIRST EPSS
- GHSA-f6cg-x72x-c392 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-56098 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences