CVE-2026-5136 | Foreman: foreman: privilege escalation to administrator-level access via usergroup role assignment manipulation

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.

Published: 2026-07-01 Last update: 2026-07-08 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-5136 is rated Moderate Risk (42.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.30%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-5136

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-07-02 — 0.30% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-5136

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]

Weakness enumeration for CVE-2026-5136

GitHub Security Advisory for CVE-2026-5136

GHSA-fpxf-rppp-4373 · Severity: high — A flaw was found in Foreman. The Usergroup model in Foreman does not properly validate role...

OS Trackers for CVE-2026-5136

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2026-5136

Affected software / configurations for CVE-2026-5136

Vendor Product Version Raw CPE
redhat satellite >= 6.16, < 6.16.10 cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:*
redhat satellite >= 6.17, < 6.17.9 cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:*
redhat satellite >= 6.18, < 6.18.7 cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:*
redhat satellite >= 6.19, < 6.19.2 cpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:*
theforeman foreman < 3.18.2 cpe:2.3:a:theforeman:foreman:*:*:*:*:*:*:*:*
theforeman foreman >= 3.19.0, < 3.19.1 cpe:2.3:a:theforeman:foreman:*:*:*:*:*:*:*:*

References for CVE-2026-5136

cvelogic Threat Intelligence