{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18874", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-08-04T17:21:18.911Z", "datePublished": "2026-08-19T17:52:39.317Z", "dateUpdated": "2026-08-19T17:52:39.317Z"}, "containers": {"cna": {"title": "Volsync-addon-controller: volsync-addon-controller: annotation values rendered into yaml via text/template without escaping allows yaml injection into subscription", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhacm2/acm-volsync-addon-controller-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:acm:2"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-18874", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511115", "name": "RHBZ#2511115", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-08-19T17:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-94", "description": "Improper Control of Generation of Code ('Code Injection')", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "workarounds": [{"lang": "en", "value": "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."}], "timeline": [{"lang": "en", "time": "2026-05-26T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-08-19T17:00:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-08-19T17:52:39.317Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:acm:2"], "defaultStatus": "affected", "packageName": "rhacm2/acm-volsync-addon-controller-rhel9", "product": "Red Hat Advanced Cluster Management for Kubernetes 2", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-18874", "lastModified": "2026-08-19T18:16:36.080", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 5.5, "source": "secalert@redhat.com", "type": "Primary"}]}, "published": "2026-08-19T18:16:36.080", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-18874"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511115"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}], "source": "secalert@redhat.com", "type": "Primary"}]}

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