Medium [CVE-2026-81668] Rubygem-katello: cross-tenant content view filter rule access and modification via unauthorized parent filter lookup
This medium-severity Red Hat Linux advisory covers CVE-2026-81668 affecting Red Hat Satellite 6.
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Summary
A flaw was found in Katello where the Content View Filter Rules API does not properly enforce authorization on the parent Content View Filter.
An authenticated, low-privileged user with Content View permissions in one organization may be able to access and modify filter rules belonging to a Content View Filter in another organization by supplying that filter's identifier.
This can result in unauthorized disclosure of filter-rule information and unauthorized changes to unpublished Content View filter configuration. Red Hat Product Security has assessed this issue as a Moderate severity vulnerability.
The issue arises because the API loads the parent Content View Filter by identifier without an authorization-aware scope. Successful exploitation allows the attacker to read filter-rule metadata and to add, change, or delete rules outside their authorized organization.
Those changes persist in the live filter configuration and can affect the content included in a subsequent Content View publication. Already-published Content View versions are immutable snapshots and are not modified by this flaw.
Confidentiality is Low because the disclosed data is filter-rule metadata rather than repository contents or credentials.
Affected product named by the advisory: Red Hat Satellite 6.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the relevant security updates when they become available.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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