CVE-2026-66878

HIGHCVSS 7.7/10EPSS 0.21%

Last modified

CVE-2026-66878 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.

Metrics

EPSS Probability
0.21%

11.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.11All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.13All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.14All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.15All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-66878?
A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field, the user can cause the system to copy sensitive Secret contents from other namespaces into their own, leading to information disclosure.
How severe is CVE-2026-66878?
CVE-2026-66878 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-66878?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST