{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88810", "assignerOrgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "state": "PUBLISHED", "assignerShortName": "suse", "dateReserved": "2026-09-10T08:35:07.010Z", "datePublished": "2026-11-02T16:29:46.733Z", "dateUpdated": "2026-11-02T16:29:46.733Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "404e59f5-483d-4b8a-8e7a-e67604dd8afb", "shortName": "suse", "dateUpdated": "2026-11-02T16:29:46.733Z"}, "title": "Privilege escalation in downstream clusters via GlobalRole inheritedNamespacedRules", "datePublic": "2026-11-02T16:21:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-306", "description": "CWE-306 Missing authentication for critical function", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-115", "descriptions": [{"lang": "en", "value": "CAPEC-115 Authentication Bypass"}]}], "affected": [{"vendor": "SUSE", "product": "Rancher", "packageName": "Rancher", "repo": "https://github.com/rancher/rancher/", "versions": [{"status": "affected", "version": "2.15.2", "lessThan": "2.15.3", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "SUSE", "product": "Rancher", "packageName": "Webhook", "repo": "https://github.com/rancher/webhook/", "versions": [{"status": "affected", "version": "0.11.0", "lessThan": "0.11.4", "versionType": "semver"}, {"status": "affected", "version": "0.12.0", "lessThan": "0.12.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.15.2", "versionEndExcluding": "2.15.3"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.11.0", "versionEndExcluding": "0.11.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.12.0", "versionEndExcluding": "0.12.1"}]}]}], "descriptions": [{"lang": "en", "value": "A privilege escalation issue was discovered in Rancher Manager's role-based access control. The inheritedNamespacedRules field of a GlobalRole propagates permissions into named namespaces of every downstream cluster managed by the Rancher instance, but it was not subject to the privilege-escalation validation applied to the other permission-carrying\u00a0fields of a GlobalRole.\u00a0As a result, a non-administrative user could be granted, through a global role\u00a0 binding,\u00a0permissions in downstream clusters that exceed the permissions that user already holds. This affected SUSE Rancher 2.15.2 only, and SUSE Rancher Webhook 0.11.0 up to 0.11.4, and 0.12.0 up to 0.12.1.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>A privilege escalation issue was discovered in Rancher Manager's role-based access control. The <code>inheritedNamespacedRules</code> field of a <code>GlobalRole</code> propagates permissions into named namespaces of every downstream cluster managed by the Rancher instance, but it was not subject to the privilege-escalation validation applied to the other permission-carrying&nbsp;fields of a <code>GlobalRole</code>.&nbsp;As a result, a non-administrative user could be granted, through a global role&nbsp; binding,&nbsp;permissions in downstream clusters that exceed the permissions that user already holds. This affected SUSE Rancher 2.15.2 only, and SUSE Rancher Webhook 0.11.0 up to 0.11.4, and 0.12.0 up to 0.12.1.</p><br>"}]}], "references": [{"url": "https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.2, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}}], "credits": [{"lang": "en", "value": "Eurico Nicacio", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "Rancher", "product": "Rancher", "repo": "https://github.com/rancher/rancher/", "vendor": "SUSE", "versions": [{"lessThan": "2.15.3", "status": "affected", "version": "2.15.2", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "Webhook", "product": "Rancher", "repo": "https://github.com/rancher/webhook/", "vendor": "SUSE", "versions": [{"lessThan": "0.11.4", "status": "affected", "version": "0.11.0", "versionType": "semver"}, {"lessThan": "0.12.1", "status": "affected", "version": "0.12.0", "versionType": "semver"}]}], "source": "meissner@suse.de"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A privilege escalation issue was discovered in Rancher Manager's role-based access control. The inheritedNamespacedRules field of a GlobalRole propagates permissions into named namespaces of every downstream cluster managed by the Rancher instance, but it was not subject to the privilege-escalation validation applied to the other permission-carrying\u00a0fields of a GlobalRole.\u00a0As a result, a non-administrative user could be granted, through a global role\u00a0 binding,\u00a0permissions in downstream clusters that exceed the permissions that user already holds. This affected SUSE Rancher 2.15.2 only, and SUSE Rancher Webhook 0.11.0 up to 0.11.4, and 0.12.0 up to 0.12.1."}], "id": "CVE-2026-88810", "lastModified": "2026-11-02T17:17:45.647", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "meissner@suse.de", "type": "Secondary"}]}, "published": "2026-11-02T17:17:45.647", "references": [{"source": "meissner@suse.de", "url": "https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"}], "sourceIdentifier": "meissner@suse.de", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "meissner@suse.de", "type": "Primary"}]}

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