# CVE-2026-56097: Rubygem-katello: sql injection in registry proxy via labels

Status: published. Published: 2026-10-01. Updated: 2026-11-02.

A flaw was found in rubygem-katello. An SQL injection vulnerability exists in the Red Hat Satellite Katello Registry Proxy. The application fails to sanitize input parameters used in database queries within the RegistryProxiesController. The methods check_blob_push_org_label and get_matching_products_from_org take user-supplied labels directly from the request path and interpolate them into raw SQL fragments. This flaw is accessible to a user with only the create_personal_access_tokens permission, even if the user access is restricted, with no Organization or Location assigned.

## Remediation

- workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat Satellite 6.16 for RHEL 8 (rubygem-katello): ≥ 0:4.14.0.23-1.el8sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.16 for RHEL 9 (rubygem-katello): ≥ 0:4.14.0.23-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.17 for RHEL 9 (rubygem-katello): ≥ 0:4.16.0.20-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.18 for RHEL 9 (rubygem-katello): ≥ 0:4.18.0.24-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6.19 for RHEL 9 (rubygem-katello): ≥ 0:4.20.0.11-1.el9sat; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Satellite 6 (katello): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Satellite 6 (satellite:el8/rubygem-katello): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.29% as of 2026-11-02; percentile 21.62%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-89

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:74503 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74504 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74505 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:74506 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-56097 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2490543 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- http://www.openwall.com/lists/oss-security/2026/10/07/4 (ADP: CVE)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-56097; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-56097; retrieved 2026-11-02; source updated Not reported

Revision: 4f7feba06a66db622e0b76acb42f69f6e00b20adbab7878cbdb73dc413982729

Canonical: https://y2.dev/cve/CVE-2026-56097

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