CVE-2026-5138
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk16th percentile — higher than 16% of all known CVEs
Summary
A cross-tenant information disclosure vulnerability was found in Foreman. An authenticated user with host-edit permissions can bypass authorization checks and leak sensitive infrastructure metadata from unauthorized organizations and locations.
Risk Assessment
An attacker can steal infrastructure metadata such as subnet topology, IP ranges, gateways, DNS servers, and VLAN IDs, enabling further network attacks.
Recommendation
Immediately update Foreman to a patched version and review user permissions for those with host-edit privileges.
Original NVD description (English source)
A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomy_scope controller method does not properly validate organization and location IDs from nested request parameters, bypassing existing authorization checks. This allows the user to leak sensitive infrastructure metadata, including subnet topology, IP ranges, gateways, DNS servers, and VLAN IDs, from organizations and locations they are not authorized to access.