CVE-2026-5136
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk22th percentile — higher than 22% of all known CVEs
Summary
The Usergroup model in Foreman does not properly validate role assignments against the calling user's permissions. This allows an authenticated user with usergroup management permissions to attach arbitrary roles, including administrative roles, to a user group and then add themselves as a member.
Risk Assessment
Successful exploitation of this vulnerability leads to full privilege escalation, granting the attacker administrator-level access, which could result in complete compromise of the Foreman system.
Recommendation
Immediately update Foreman to a patched version that addresses this flaw and review existing user groups and role assignments for any unauthorized changes.
Original NVD description (English source)
A flaw was found in Foreman. The Usergroup model in Foreman does not properly validate role assignments against the calling user's permissions. This allows an authenticated user with usergroup management permissions to attach arbitrary roles, including administrative roles, to a user group and then add themselves as a member. Successful exploitation of this vulnerability leads to full privilege escalation, granting the attacker administrator-level access.