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CVE-2026-56098— Rubygem-katello: improper authorization logic allows resource enumeration

Quick assessment

Affected
Red Hat Red Hat Satellite 6.19 for RHEL 9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 rubygem-katello 中发现了一个漏洞。Katello 中的 RegistryProxiesController 存在一个授权绕过漏洞，原因是 registry_authorize 过滤器中存在执行流程穿透（fall-through）问题。虽然应用程序能够识别未授权的请求并通过 unauthorized 方法触发错误响应，但由于缺少 return 语句，未能终止当前代码路径的执行。这种控制流上的缺陷导致应用程序继续执行后续的业务逻辑和数据库验证过滤器。因此，应用程序通过差异化的响应泄露了其内部状态，使

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-56098

Vulnerability Information
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Vulnerability Title
Rubygem-katello: improper authorization logic allows resource enumeration
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Satellite 6.19 for RHEL 9 0:4.20.0.11-1.el9sat ~ * cpe:/a:redhat:satellite:6.19::el9
Red Hat Red Hat Satellite 6 - cpe:/a:redhat:satellite:6
Red Hat Red Hat Satellite 6 - cpe:/a:redhat:satellite:6

II. Public POCs for CVE-2026-56098

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III. Intelligence Information for CVE-2026-56098

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Other References for CVE-2026-56098 (3)

Same Patch Batch · Red Hat · 2026-10-01 · 16 CVEs total

CVE-2026-96658 9.9 CRITICAL Foreman: safemode bypass leading to rce
CVE-2026-96659 9.1 CRITICAL Foreman: excessive permissions for viewer role on preview
CVE-2026-12405 8.8 HIGH Rubygem-foreman_remote_execution: command injection in job invocations via effective_user
CVE-2026-12541 8.2 HIGH Foreman: command injection in foreman-rake database tasks
CVE-2026-12540 8.2 HIGH Foreman: command injection in foreman-rake errors:fetch_log via request_id parameter
CVE-2026-12544 7.7 HIGH Foreman: ssti and insecure deserialization in foreman-rake configuration
CVE-2026-12423 7.5 HIGH Foreman: unauthenticated information disclosure via provisioning token validation flaw
CVE-2026-96577 7.1 HIGH Oc-mirror__release-4.21: embedded local cache registry listens on all interfaces without a
CVE-2026-12545 6.7 MEDIUM Rubygem-hammer_cli: command injection via insecure editor invocation
CVE-2026-103884 6.5 MEDIUM Keycloak-services: keycloak-services: path traversal in x.509 crl distribution point allow
CVE-2026-56097 6.5 MEDIUM Rubygem-katello: sql injection in registry proxy via labels
CVE-2026-83589 6.1 MEDIUM Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect
CVE-2026-103754 5.9 MEDIUM Ansible-runner: ansible-runner: path traversal and symlink escape in unstream_dir() allows
CVE-2026-103641 5.5 MEDIUM Gegl: gegl04: gegl: out-of-bounds read in the radiance hdr uncompressed scanline decoder
CVE-2026-12542 5.3 MEDIUM Foreman: command injection in foreman-tail

IV. Related Vulnerabilities

Same product: Red Hat Satellite 6.19 for RHEL 9
Same vendor: Red Hat
Same weakness: CWE-203

V. Comments for CVE-2026-56098

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