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Fencer Vulns
high 8.8

CVE-2026-5136 json

Foreman: foreman: privilege escalation to administrator-level access via usergroup role assignment manipulation

published 2026-07-01 4 mo ago modified 2026-07-09 4 mo ago also EUVD-2026-40959

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Satellite 6.16 for RHEL 8 0:3.12.0.17-1.el8sat
  • Red Hat Red Hat Satellite 6.16 for RHEL 9 0:3.12.0.17-1.el9sat
  • Red Hat Red Hat Satellite 6.17 for RHEL 9 0:3.14.0.17-1.el9sat
  • Red Hat Red Hat Satellite 6.18 for RHEL 9 0:3.16.0.17-1.el9sat
  • Red Hat Red Hat Satellite 6.19 for RHEL 9 0:3.18.0.7-1.el9sat
  • foreman satellite utils 6.16, satellite capsule 6.16, satellite 6.16 3.12.0.17-1.el8sat
  • foreman satellite utils 6.16, satellite capsule 6.16, satellite 6.16 3.12.0.17-1.el9sat
  • foreman-cli satellite utils 6.16, satellite 6.16 3.12.0.17-1.el8sat
  • foreman-cli satellite utils 6.16, satellite 6.16 3.12.0.17-1.el9sat
  • foreman-ec2 satellite 6.16 3.12.0.17-1.el8sat
  • foreman-ec2 satellite 6.16 3.12.0.17-1.el9sat
  • foreman-pcp satellite capsule 6.16, satellite 6.16 3.12.0.17-1.el8sat
  • foreman-pcp satellite capsule 6.16, satellite 6.16 3.12.0.17-1.el9sat

red hat advisories RHSA-2026:34367RHSA-2026:34368RHSA-2026:34365RHSA-2026:34366

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-5136 updated cvss 8.8

foreman: Foreman: Privilege escalation to administrator-level access via usergroup role assignment manipulation

  • Red Hat Satellite 6 foreman, foreman-cli, foreman-ec2, foreman-gce, foreman-ovirt, foreman-vmware, +9 more
    affected: no fix available
  • Red Hat Satellite 6.16 for RHEL 8 foreman 3.12.0.17-1.el8sat, foreman-cli 3.12.0.17-1.el8sat, foreman-ec2 3.12.0.17-1.el8sat, foreman-pcp 3.12.0.17-1.el8sat, foreman-ovirt 3.12.0.17-1.el8sat, foreman-redis 3.12.0.17-1.el8sat, +8 more Red Hat Satellite 6.16 for RHEL 9 foreman 3.12.0.17-1.el9sat, foreman-cli 3.12.0.17-1.el9sat, foreman-ec2 3.12.0.17-1.el9sat, foreman-pcp 3.12.0.17-1.el9sat, foreman-ovirt 3.12.0.17-1.el9sat, foreman-redis 3.12.0.17-1.el9sat, +8 more
    fixed: vendor fix RHSA-2026:34367
  • Red Hat Satellite 6.17 for RHEL 9 foreman 3.14.0.17-1.el9sat, foreman-cli 3.14.0.17-1.el9sat, foreman-ec2 3.14.0.17-1.el9sat, foreman-pcp 3.14.0.17-1.el9sat, foreman-ovirt 3.14.0.17-1.el9sat, foreman-redis 3.14.0.17-1.el9sat, +8 more
    fixed: vendor fix RHSA-2026:34366
  • Red Hat Satellite 6.18 for RHEL 9 foreman 3.16.0.17-1.el9sat, foreman-cli 3.16.0.17-1.el9sat, foreman-ec2 3.16.0.17-1.el9sat, foreman-pcp 3.16.0.17-1.el9sat, foreman-redis 3.16.0.17-1.el9sat, foreman-vmware 3.16.0.17-1.el9sat, +7 more
    fixed: vendor fix RHSA-2026:34368
  • Red Hat Satellite 6.19 for RHEL 9 foreman 3.18.0.7-1.el9sat, foreman-cli 3.18.0.7-1.el9sat, foreman-ec2 3.18.0.7-1.el9sat, foreman-pcp 3.18.0.7-1.el9sat, foreman-redis 3.18.0.7-1.el9sat, foreman-vmware 3.18.0.7-1.el9sat, +7 more
    fixed: vendor fix RHSA-2026:34365
  • Red Hat Satellite 6.16 for RHEL 8 satellite 6.16.10-1.el8sat, satellite-cli 6.16.10-1.el8sat, satellite-common 6.16.10-1.el8sat, satellite-capsule 6.16.10-1.el8sat, rubygem-foreman_maintain 1.7.14-2.el8sat Red Hat Satellite 6.16 for RHEL 9 satellite 6.16.10-1.el9sat, satellite-cli 6.16.10-1.el9sat, satellite-common 6.16.10-1.el9sat, satellite-capsule 6.16.10-1.el9sat, rubygem-foreman_maintain 1.7.14-2.el9sat Red Hat Satellite 6.17 for RHEL 9 satellite 6.17.9-1.el9sat, python-pillow 12.2.0-1.el9pc, satellite-cli 6.17.9-1.el9sat, dynflow-utils 1.6.3-1.1.el9sat, python3.11-pillow 12.2.0-1.el9pc, satellite-common 6.17.9-1.el9sat, +7 more Red Hat Satellite 6.18 for RHEL 9 satellite 6.18.7-1.el9sat, satellite-cli 6.18.7-1.el9sat, python3.12-pillow 12.2.0-1.el9pc, satellite-common 6.18.7-1.el9sat, satellite-capsule 6.18.7-1.el9sat, rubygem-katello 4.18.0.14-1.el9sat, +2 more Red Hat Satellite 6.19 for RHEL 9 candlepin 4.7.5-1.el9sat, satellite 6.19.2-1.el9sat, satellite-cli 6.19.2-1.el9sat, python3.12-pyjwt 2.13.0-1.el9pc, candlepin-selinux 4.7.5-1.el9sat, python3.12-pillow 12.2.0-1.el9pc, +8 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Red Hat Satellite 6.19 for RHEL 9
  • Red Hat Red Hat Satellite 6

Classification

Weakness
  • CWE-266 Incorrect Privilege Assignment

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.