Quick answers
- Is CVE-2026-81668 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-81668 being exploited in the wild.
- How severe is CVE-2026-81668?
- Medium severity, with a CVSS score of 5.4, published 27 August 2026.
- Which products and versions are affected?
- Red Hat Katello <UNKNOWN>.
- Is there a fix for CVE-2026-81668?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-81668 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-81668?
- Check whether you run Red Hat Katello at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a cross-tenant authorization bypass (CWE-639) in Katello's Content View Filter Rules API. The API loads parent Content View Filters by identifier without performing proper authorization-aware scope checking, allowing authenticated users with Content View permissions in one organization to access and modify filter rules in other organizations. An attacker can read filter-rule metadata and add, change, or delete rules outside their authorized organization; however, changes only affect unpublished filter configurations and cannot modify already-published Content View versions or repository contents. The vulnerability requires network access and low-level privileges within the system but no user interaction.
Affected products
- Red Hat Katello <UNKNOWN>
Timeline
- 2026-08-27: disclosed