CVE-2026-1531 – This vulnerability in foreman_kubevirt disables... (How to Fix)

Q: What is the severity of CVE-2026-1531?

CVE-2026-1531 has a CVSS score of 8.1 (HIGH). This vulnerability in foreman_kubevirt disables SSL certificate verification by default when connecting to OpenShift without an explicitly set CA certificate. This allows attackers who can intercept Satellite-OpenShift traffic to perform MITM attacks, potentially exposing or modifying sensitive data. Organizations using foreman_kubevirt to manage OpenShift connections are affected.

📋 TL;DR

This vulnerability in foreman_kubevirt disables SSL certificate verification by default when connecting to OpenShift without an explicitly set CA certificate. This allows attackers who can intercept Satellite-OpenShift traffic to perform MITM attacks, potentially exposing or modifying sensitive data. Organizations using foreman_kubevirt to manage OpenShift connections are affected.

💻 Affected Systems

Products:

foreman_kubevirt

Versions: All versions prior to fix

Operating Systems: Linux

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects configurations where CA certificate is not explicitly set for OpenShift connections.

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of Satellite-OpenShift communications, allowing attacker to intercept, modify, or inject data, potentially gaining administrative access to managed systems.

🟠

Likely Case

Interception of sensitive configuration data, credentials, or management commands between Satellite and OpenShift clusters.

🟢

If Mitigated

Limited impact with proper network segmentation and certificate validation in place.

🌐 Internet-Facing: MEDIUM - Only affects systems where Satellite-OpenShift traffic traverses untrusted networks.

🏢 Internal Only: LOW - Requires attacker to already have network access to intercept internal traffic.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

Requires network position to intercept traffic between Satellite and OpenShift.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Check Red Hat advisories for specific version

Vendor Advisory: https://access.redhat.com/security/cve/CVE-2026-1531

Restart Required: Yes

Instructions:

1. Update foreman_kubevirt package via yum/dnf. 2. Restart foreman services. 3. Verify SSL verification is enabled for OpenShift connections.

🔧 Temporary Workarounds

Explicitly set CA certificate

linux

Configure foreman_kubevirt to use a specific CA certificate for OpenShift connections

# Edit foreman_kubevirt configuration to include ca_cert parameter for OpenShift

Network segmentation

all

Isolate Satellite-OpenShift traffic to trusted networks only

🧯 If You Can't Patch

Implement strict network controls to prevent traffic interception between Satellite and OpenShift
Enable and verify SSL certificate validation in foreman_kubevirt configuration

🔍 How to Verify

Check if Vulnerable:

Check foreman_kubevirt configuration for OpenShift connections without explicit CA certificate setting

Check Version:

rpm -q foreman_kubevirt

Verify Fix Applied:

Verify SSL verification is enabled and working for OpenShift connections

📡 Detection & Monitoring

Log Indicators:

SSL/TLS handshake failures
Certificate validation warnings
Unexpected connection resets

Network Indicators:

Unencrypted or improperly encrypted traffic between Satellite and OpenShift
Unexpected MITM activity

SIEM Query:

source="foreman" AND ("SSL" OR "certificate" OR "verification") AND ("failed" OR "warning" OR "disabled")

📊 Metadata

CVE ID: CVE-2026-1531

CVSS v3 Score: 8.1 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CWE: CWE-295

Published: February 2, 2026

Last Updated: February 4, 2026

🤖 AI-assisted analysis, reviewed for accuracy