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VulnerabilityPublished

CVE-2026-19706: Assisted Installer for Red Hat OpenShift Container Platform 2 · Missing Authentication for Critical Functionality

Affects Assisted Installer for Red Hat OpenShift Container Platform 2Source CVE Database V5

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Not known to be exploited · CVSS 8.3 High.

Data as of 9 Nov 2026, 17:34 UTC

CVSS 3.1 base score
8.3High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.18.3
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Assisted Installer for Red Hat OpenShift Container Platform 2assisted/agent-preinstall-image-builder-rhel9Affected–Fixed in–
Assisted Installer for Red Hat OpenShift Container Platform 2rhai/assisted-installer-agent-rhel9Affected–Fixed in–
Assisted Installer for Red Hat OpenShift Container Platform 2rhai/assisted-installer-controller-rhel9Affected–Fixed in–
Multicluster Engine for Kubernetesmulticluster-engine/assisted-installer-agent-rhel8Affected–Fixed in–
Multicluster Engine for Kubernetesmulticluster-engine/assisted-installer-agent-rhel9Affected–Fixed in–
Multicluster Engine for Kubernetesmulticluster-engine/assisted-installer-controller-rhel8Affected–Fixed in–

AI-suggested

Red Hat has published an advisory for CVE-2026-19706. Customers should refer to the official Red Hat advisory for patch availability and remediation guidance. Since the vulnerability is exploitable only during the narrow bootstrap window, ensuring network isolation of the bootstrap node during installation can reduce risk. Patch status is not explicitly stated in the provided data; therefore, check the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-19706 for current remediation status and apply any official fixes or mitigations provided by Red Hat.

Description

CVE-2026-19706 is a vulnerability in the Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 during the bootstrap phase. The bootstrap node's approve-csr.service approves and signs all Certificate Signing Requests (CSRs) without validating the requester's identity. An attacker with network access during this narrow bootstrap window can retrieve an unauthenticated Ignition file, extract a limited kubeconfig, submit a CSR for the system:admin identity, and gain full cluster-admin privileges.

References

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