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CVE-2026-1531 Red Hat CVE debrief

A flaw was found in foreman_kubevirt. When configuring the connection to OpenShift, the system disables SSL verification if a Certificate Authority (CA) certificate is not explicitly set. This insecure default allows a remote attacker, capable of intercepting network traffic between Satellite and OpenShift, to perform a Man-in-the-Middle (MITM) attack. Such an attack could lead to the disclosure or alteration of sensitive information. The CVE-2026-1531 vulnerability has a CVSS score of 8.1 and is considered HIGH severity. The vulnerability was published on 2026-02-02T06:16:20.790Z and last modified on 2026-06-30T03:17:18.133Z.

Vendor
Red Hat
Product
Red Hat Satellite 6.16 for RHEL 8
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-02-02
Original CVE updated
2026-07-15
Advisory published
2026-02-02
Advisory updated
2026-07-15

Who should care

Organizations using foreman_kubevirt and OpenShift should be aware of this vulnerability. Specifically, those with Satellite and OpenShift connections may be at risk if they have not explicitly set a CA certificate. Security teams and administrators responsible for configuring and maintaining these systems should prioritize assessment and remediation.

Technical summary

The foreman_kubevirt component has an insecure default behavior when connecting to OpenShift. If no Certificate Authority (CA) certificate is provided, SSL verification is disabled. This allows a remote attacker to intercept and potentially alter communications between Satellite and OpenShift. The vulnerability is characterized by a CVSS:3.1 vector of AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, indicating a high severity with a score of 8.1. The CWE-295 weakness is associated with this vulnerability, relating to Improper Certificate Validation.

Defensive priority

High priority should be given to updating or configuring foreman_kubevirt to ensure proper SSL verification is in place when connecting to OpenShift. This involves explicitly setting a valid CA certificate to prevent Man-in-the-Middle attacks.

Recommended defensive actions

  • Update foreman_kubevirt to ensure proper SSL verification is enabled for OpenShift connections.
  • Configure a valid Certificate Authority (CA) certificate for foreman_kubevirt connections to OpenShift.
  • Review and update Satellite configurations to ensure secure communication with OpenShift.
  • Perform vulnerability scanning to identify affected systems.
  • Monitor network traffic for signs of potential Man-in-the-Middle attacks.

Evidence notes

The CVE-2026-1531 vulnerability was identified in foreman_kubevirt. The NVD provides detailed information about the vulnerability, including its CVSS score and vector. Red Hat has published errata and a security advisory related to this vulnerability (RHSA-2026:5968, RHSA-2026:5970, RHSA-2026:5971). A bugzilla entry (2433786) is also associated with this issue. The official CVE record and NVD detail pages provide comprehensive information about the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-1531 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-1531

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-1531 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-1531

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.