CVE-2026-1530 is a high-severity (CVSS 8.1) CWE-295 vulnerability in fog-kubevirt. A fix is available for fog-kubevirt — see the affected versions and patch details below.
fog-kubevirt allows remote attacker to perform MITM attack due to disabled certificate validation
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-1530.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
fog-kubevirtReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
A flaw was found in fog-kubevirt. This vulnerability allows a remote attacker to perform a Man-in-the-Middle (MITM) attack due to disabled certificate validation. This enables the attacker to intercept and potentially alter sensitive communications between Satellite and OpenShift, resulting in information disclosure and data integrity compromise.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | fog-kubevirt | all versions | 1.5.1bundle update fog-kubevirt --conservative |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for fog-kubevirt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update fog-kubevirt to 1.5.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-1530 is resolved across your whole dependency graph.
Workarounds
Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This is an IMPORTANT flaw in fog-kubevirt, a component used by Red Hat Satellite for managing OpenShift Virtualization/KubeVirt. The vulnerability allows a Man-in-the-Middle (MITM) attack due to disabled certificate validation. An attacker capable of intercepting traffic between Satellite and OpenShift could exploit…
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.Source: Red Hat security advisory for CVE-2026-1530 (CC BY 4.0)
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Satellite 6.16 for RHEL 8 | rubygem-fog-kubevirt-0:1.5.1-1.el8sat | RHSA-2026:5971 |
| Red Hat Satellite 6.17 for RHEL 9 | foreman-0:3.14.0.14-1.el9sat | RHSA-2026:5970 |
Frequently Asked Questions
Is CVE-2026-1530 in your dependencies?
Find it across RubyGems, including transitive dependencies.