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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:34365 advisory.

    Red Hat Satellite is a system management solution that allows organizations     to configure and maintain their systems without the necessity to provide     public Internet access to their servers or other client systems. It     performs provisioning and configuration management of predefined standard     operating environments.

    Security Fix(es):

    * candlepin: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted objects     (CVE-2026-27727)
    * yggdrasil-worker-forwarder: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)
    * yggdrasil-worker-forwarder: Go crypto/x509: Certificate validation bypass due to incorrect DNS     constraint application (CVE-2026-33810)
    * yggdrasil-worker-forwarder: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)
    * yggdrasil-worker-forwarder: Go: Denial of Service vulnerability in certificate chain building     (CVE-2026-32280)
    * yggdrasil-worker-forwarder: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages     (CVE-2026-32283)
    * yggdrasil-worker-forwarder: Go crypto/x509: Denial of Service via inefficient certificate chain     validation (CVE-2026-32281)
    * python-pillow: Pillow: Denial of Service via decompression bomb in FITS image processing     (CVE-2026-40192)
    * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526)
    * foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)
    * foreman: Foreman: Information disclosure via improper validation of nested request parameters     (CVE-2026-5138)
    * foreman: Foreman: Privilege escalation to administrator-level access via usergroup role assignment     manipulation (CVE-2026-5136)
    * foreman: Foreman: Unauthorized modification of host configurations via broken access control     (CVE-2026-5135)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:34367 advisory.

    Red Hat Satellite is a system management solution that allows organizations     to configure and maintain their systems without the necessity to provide     public Internet access to their servers or other client systems. It     performs provisioning and configuration management of predefined standard     operating environments.

    Security Fix(es):

    * satellite-capsule:el8/foreman: Foreman: Privilege escalation to administrator-level access via usergroup     role assignment manipulation (CVE-2026-5136)

    * foreman: Foreman: Privilege escalation to administrator-level access via usergroup role assignment     manipulation (CVE-2026-5136)

    * foreman: Foreman: Information disclosure via improper validation of nested request parameters     (CVE-2026-5138)

    * satellite-capsule:el8/foreman: Foreman: Information disclosure via improper validation of nested request     parameters (CVE-2026-5138)

    * satellite-capsule:el8/foreman: Foreman: Unauthorized modification of host configurations via broken     access control (CVE-2026-5135)

    * foreman: Foreman: Unauthorized modification of host configurations via broken access control     (CVE-2026-5135)

    * foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)

    * satellite-capsule:el8/foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping     bypass (CVE-2026-5142)

    Bug Fix(es):

    * foreman-maintain from eus repository not enabling proper repos (SAT-47220)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:34368 advisory.

    Red Hat Satellite is a system management solution that allows organizations     to configure and maintain their systems without the necessity to provide     public Internet access to their servers or other client systems. It     performs provisioning and configuration management of predefined standard     operating environments.

    Security Fix(es):

    * foreman: Unauthorized modification of host configurations via broken access control (CVE-2026-5135)

    * foreman: Privilege escalation to administrator-level access via usergroup role assignment manipulation     (CVE-2026-5136)

    * foreman: Information disclosure via improper validation of nested request parameters (CVE-2026-5138)

    * foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)

    * yggdrasil-worker-forwarder: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

    * python-pillow: Pillow: Denial of Service via decompression bomb in FITS image processing     (CVE-2026-40192)

    Bug Fix(es):
    * orphan cleanup triggers CapsuleContent::UpdateContentCounts regardless of     automatic_content_count_updates setting (SAT-47204)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:34366 advisory.

    Red Hat Satellite is a system management solution that allows organizations     to configure and maintain their systems without the necessity to provide     public Internet access to their servers or other client systems. It     performs provisioning and configuration management of predefined standard     operating environments.

    Security Fix(es):

      * python-pillow: Pillow: Denial of Service via decompression bomb in FITS image processing     (CVE-2026-40192)

      * dynflow-utils: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

      * yggdrasil-worker-forwarder: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

      * foreman: Foreman: Privilege escalation to administrator-level access via     usergroup role assignment manipulation (CVE-2026-5136)

      * foreman: Foreman: Information disclosure via improper validation of nested request parameters     (CVE-2026-5138)

      * foreman: Foreman: Unauthorized modification of host configurations via broken access control     (CVE-2026-5135)

      * foreman: foreman: Cross-tenant private SSH key disclosure via taxonomy scoping bypass (CVE-2026-5142)

      For more details about the security issue(s), including the impact, a CVSS       score, acknowledgments, and other related information, refer to the CVE       page(s) listed in the References section.

      Bug Fix(es):

      * orphan cleanup triggers CapsuleContent::UpdateContentCounts regardless of     automatic_content_count_updates setting (SAT-45923)

      * The custom repository fails to sync with the Capsule server, resulting in an error (SAT-44719)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
324610	RHEL 9 : Satellite 6.19.2 Async Update (Important) (RHSA-2026:34365)	Nessus	Red Hat Local Security Checks	high
324600	RHEL 8 / 9 : Satellite 6.16.10 Async Update (Important) (RHSA-2026:34367)	Nessus	Red Hat Local Security Checks	high
324596	RHEL 9 : Satellite 6.18.7 Async Update (Important) (RHSA-2026:34368)	Nessus	Red Hat Local Security Checks	high
324595	RHEL 9 : Satellite 6.17.9 Async Update (Important) (RHSA-2026:34366)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2026-5136

high

Tenable Plugins

high

high

high

high