FKIE_CVE-2026-88810
Vulnerability from fkie_nvd - Published: 2026-11-02 17:17 - Updated: 2026-11-02 19:18
Severity
Summary
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 fields of a GlobalRole. As a result, a non-administrative user could be granted, through a global role binding, 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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"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\u0027s 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": "2026-11-02T19:18:11.767",
"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"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-88810",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-11-02T18:54:14.626833Z",
"version": "2.0.3"
}
}
]
},
"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": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-306"
}
],
"source": "meissner@suse.de",
"type": "Secondary"
}
]
}
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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