# CVE-2026-1531: Foreman foreman_kubevirt insecure default SSL verification

Source: https://junglewise.ai/threats/cve-2026-1531-foreman-foreman-kubevirt-insecure-default-ssl-verification  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-02. Updated: 2026-06-30  
License: CC BY 4.0 with a link back

CVE-2026-1531 · Severity: high · CVSS 8.1 · Published 2026-02-02

A security flaw was found in the foreman_kubevirt plugin, which is used by Red Hat Satellite to manage OpenShift connections. The system incorrectly disables security encryption checks (SSL verification) by default if a specific certificate is not provided. This allows an attacker to intercept or modify sensitive data transmitted between the management server and the OpenShift environment.

Vendors: [Foreman](https://junglewise.ai/threats/vendors/foreman), [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2026-1531 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-1531 being exploited in the wild.

**How severe is CVE-2026-1531?** High severity, with a CVSS score of 8.1, published 2 February 2026.

**Which products and versions are affected?** Foreman Kubevirt before 0.4.3-1; foreman_kubevirt (RubyGems) ECOSYSTEM:introduced=0,fixed=0.4.3.

**Is there a fix for CVE-2026-1531?** Yes. foreman_kubevirt (RubyGems): upgrade to 0.4.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-1531 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-1531?** Check whether you run Foreman Kubevirt or foreman_kubevirt (RubyGems) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- foreman_kubevirt (RubyGems): upgrade to 0.4.3 or later

  ```sh
  bundle update foreman_kubevirt
  ```


## Technical details

The foreman_kubevirt plugin (rubygem-foreman_kubevirt) fails to enforce SSL certificate validation when a Certificate Authority (CA) certificate is not explicitly configured during the OpenShift connection setup. This results in an insecure default state (CWE-295) where the system accepts any certificate presented by the remote endpoint. A remote attacker with the ability to intercept network traffic between Red Hat Satellite and OpenShift can perform a Man-in-the-Middle (MITM) attack to disclose or alter sensitive information. The vulnerability is addressed in rubygem-foreman_kubevirt version 0.4.3-1 and subsequent Red Hat Satellite errata (RHSA-2026:5968, RHSA-2026:5970).

## Affected products

- Red Hat Satellite 6.16, 6.17, 6.18
- Foreman foreman_kubevirt before 0.4.3-1

## Identifiers

- CVE-2026-1531
- GHSA-2qxw-7fmx-gqfm

## Timeline

- 2026-02-02: disclosed
- 2026-03-26: patched: Red Hat released security advisories RHSA-2026:5968 and RHSA-2026:5970

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/errata/RHSA-2026:5968](https://access.redhat.com/errata/RHSA-2026:5968)
- [https://access.redhat.com/errata/RHSA-2026:5970](https://access.redhat.com/errata/RHSA-2026:5970)
- [https://access.redhat.com/errata/RHSA-2026:5971](https://access.redhat.com/errata/RHSA-2026:5971)
- [https://access.redhat.com/security/cve/CVE-2026-1531](https://access.redhat.com/security/cve/CVE-2026-1531)
- [https://bugzilla.redhat.com/show_bug.cgi?id=2433786](https://bugzilla.redhat.com/show_bug.cgi?id=2433786)
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1531.json](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1531.json)