Answer in brief
CVE-2026-19706 records a High severity (CVSS 8.3) vulnerability in Openshift/installer: openshift installer: unconditional csr approval during agent-based installation (abi) bootstrap. The current sources do not mark it as known exploited. The current feed maps Red Hat/multicluster-engine/assisted-installer-agent-rhel8 (generic), Red Hat/multicluster-engine/assisted-installer-agent-rhel9 (generic), Red Hat/multicluster-engine/assisted-installer-controller-rhel8 (generic), Red Hat/multicluster-engine/assisted-installer-controller-rhel9 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/multicluster-engine/assisted-installer-agent-rhel8 (generic), Red Hat/multicluster-engine/assisted-installer-agent-rhel9 (generic), Red Hat/multicluster-engine/assisted-installer-controller-rhel8 (generic), Red Hat/multicluster-engine/assisted-installer-controller-rhel9 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/multicluster-engine/assisted-installer-agent-rhel8generic | * | Not reported |
| Red Hat/multicluster-engine/assisted-installer-agent-rhel9generic | * | Not reported |
| Red Hat/multicluster-engine/assisted-installer-controller-rhel8generic | * | Not reported |
| Red Hat/multicluster-engine/assisted-installer-controller-rhel9generic | * | Not reported |
| Red Hat/openshift4/ose-agent-installer-csr-approver-rhel8generic | * | Not reported |
| Red Hat/openshift4/ose-agent-installer-csr-approver-rhel9generic | * | Not reported |
| Red Hat/openshift5/ose-agent-installer-csr-approver-rhel9generic | * | Not reported |
| Red Hat/rhai/assisted-installer-agent-rhel9generic | * | Not reported |
| Red Hat/rhai/assisted-installer-controller-rhel9generic | * | Not reported |
Published upstream
Nov 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 9, 2026
During ABI bootstrap, the bootstrap node's approve-csr.service approves and signs every CSR without identity validation. An attacker on the install network can retrieve the unauthenticated Ignition file (ports 22623/22624), extract a limited kubeconfig, submit a CSR for CN=system:admin, receive the signed certificate, and gain full cluster-admin access. Exploitable only during the narrow bootstrap window.
Quoted source text, attributed separately from HOL analysis.