VDB
CVE-2026-18874
CVE-2026-18874
PUBLISHED
CVSS 6.2 MEDIUM
Reported by redhat · Published August 19, 2026
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.
Risk Scores
CVSS 3.1
6.2
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 | 1787683560 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 | 1787266564 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.14 | 1787266564 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.15 | 1787266360 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | 1787266564 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | 1787266556 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | 1787266556 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 | 1787683560 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.15 | 1787266360 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.14 | 1787266564 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | 1787266564 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 | 1787266564 |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
Timeline
- Aug 19, 2026 CVE Published
- Aug 22, 2026 Coalition ESS Score
- Aug 24, 2026 EPSS Score
- Aug 27, 2026 EPSS Score
- Aug 31, 2026 EPSS Score
- Sep 4, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 9, 2026 Distribution Patch
- Sep 9, 2026 Distribution Patch
- Sep 9, 2026 Distribution Patch
- Sep 9, 2026 Distribution Patch
- Sep 9, 2026 Distribution Patch
References
- RHSA-2026:60386 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:60387 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:60388 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:60389 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:60390 vendor-advisoryx_refsource_REDHAT
- RHSA-2026:60391 vendor-advisoryx_refsource_REDHAT
- vdb-entryx_refsource_REDHAT
- RHBZ#2511115 issue-trackingx_refsource_REDHAT