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CVE-2026-18874

Volsync-addon-controller: volsync-addon-controller: annotation values rendered into yaml via text/template without escaping allows yaml injection into subscription

Published: Aug 19, 2026Updated: Sep 8, 2026 Sources: CVE List NVDCWE-94
6.2MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 63.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:HUI:NS:UC:LI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-94

Affected Products

Red Hat
commercial·US
Red Hat Advanced Cluster Management for Kubernetes 2.11On-premSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Advanced Cluster Management for Kubernetes 2.13On-premSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Advanced Cluster Management for Kubernetes 2.14On-premSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Advanced Cluster Management for Kubernetes 2.15On-prem
Operating Systems / linux-distro
Red Hat Advanced Cluster Management for Kubernetes 2.16On-prem
Operating Systems / linux-distro
Red Hat Advanced Cluster Management for Kubernetes 2.17On-prem
Operating Systems / linux-distro

Exploitability

Workaround Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://access.redhat.com/errata/RHSA-2026:60386
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:60387
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:60388
access.redhat.com
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