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CVE-2026-18874

MEDIUMCVSS 6.2/10EPSS 0.43%

Last modified

CVE-2026-18874 is a medium-severity vulnerability rated 6.2/10 on the CVSS scale. A flaw was found in volsync-addon-controller. This vulnerability allows an attacker to inject malicious YAML (Yet Another Markup Language) code into the OpenShift Lifecycle Manager (OLM) Subscription resource. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A flaw was found in volsync-addon-controller. This vulnerability allows an attacker to inject malicious YAML (Yet Another Markup Language) code into the OpenShift Lifecycle Manager (OLM) Subscription resource. This is due to improper escaping of annotation values when they are rendered into YAML. Successful exploitation could lead to unauthorized modification or control over OLM Subscription configurations, potentially impacting software management within the cluster. This issue primarily affects systems where the 'volsync-addon-deploy-type: olm' annotation is explicitly enabled.

Metrics

CVSS 3.1
6.2/10

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

EPSS Probability
0.43%

36.0th 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-2026-18874?
A flaw was found in volsync-addon-controller. This vulnerability allows an attacker to inject malicious YAML (Yet Another Markup Language) code into the OpenShift Lifecycle Manager (OLM) Subscription resource. This is due to improper escaping of annotation values when they are rendered into YAML. Successful exploitation could lead to unauthorized modification or control over OLM Subscription configurations, potentially impacting software management within the cluster. This issue primarily affects systems where the 'volsync-addon-deploy-type: olm' annotation is explicitly enabled.
How severe is CVE-2026-18874?
CVE-2026-18874 has a CVSS score of 6.2/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2026-18874?
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