CVE-2026-18874Volsync-addon-controller: volsync-addon-controller: annotation values rendered into yaml via text/template without escaping allows yaml injection into subscription
Updated under an hour ago ()
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It affects Red Hat Advanced Cluster Management for Kubernetes 2.11. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
from 1787683560 not affected | CNA record |
References
- https://access.redhat.com/errata/RHSA-2026:60386vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60387vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60388vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60389vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60390vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:60391vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-18874vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2511115issue-tracking, x-refsource-redhat
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.