CVE-2026-18874
CVE-2026-18874: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium6.2
Medium [CVE-2026-18874] annotation values rendered into YAML via text/template without escaping allows YAML injection into Subscription
CVE-2026-18874Source published Source updated
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. Red Hat severity: Moderate — CVSS 6.2 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H). Weakness: CWE-94. Affected Red Hat products: Red Hat Advanced Cluster Management for Kubernetes 2.11; Red Hat Advanced…
- Affected products in this advisory
- Red Hat Advanced Cluster Management for Kubernetes 2.11
- Red Hat Advanced Cluster Management for Kubernetes 2.13
- Red Hat Advanced Cluster Management for Kubernetes 2.14
- Red Hat Advanced Cluster Management for Kubernetes 2.15
2 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- rhacm2/acm-volsync-addon-controller-rhel9:1787683560
- rhacm2/acm-volsync-addon-controller-rhel9:1787266564
- rhacm2/acm-volsync-addon-controller-rhel9:1787266360
- rhacm2/acm-volsync-addon-controller-rhel9:1787266556
6 more entries in the full advisory.
- Mitigation guidance
- To mitigate this vulnerability, ensure that the `volsync-addon-deploy-type` annotation is not explicitly set to `olm`. The default Helm deployment type for volsync-addon-controller in Red Hat Advanced Cluster Management for Kubernetes (since ACM 2.13) is not affected by this flaw.
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