{"affected":[{"defaultStatus":"unaffected","packageName":"Rancher","product":"Rancher","source":"CNA: suse","vendor":"SUSE","versions":[{"lessThan":"2.15.3","status":"affected","version":"2.15.2","versionType":"semver"}]},{"defaultStatus":"unaffected","packageName":"Webhook","product":"Rancher","source":"CNA: suse","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"}]},{"ecosystem":"go","packageName":"github.com/rancher/webhook","product":"github.com/rancher/webhook","source":"GitHub GHSA-f898-2c8h-r7jc","vendor":"","versions":[{"status":"affected","version":">=0.11.0, <0.11.4","versionType":"GitHub advisory range"}]},{"ecosystem":"go","packageName":"github.com/rancher/webhook","product":"github.com/rancher/webhook","source":"GitHub GHSA-f898-2c8h-r7jc","vendor":"","versions":[{"status":"affected","version":">=0.12.0, <0.12.1","versionType":"GitHub advisory range"}]},{"ecosystem":"go","packageName":"github.com/rancher/rancher","product":"github.com/rancher/rancher","source":"GitHub GHSA-f898-2c8h-r7jc","vendor":"","versions":[{"status":"affected","version":">=2.15.2","versionType":"GitHub advisory range"}]}],"cveId":"CVE-2026-88810","cwes":["CWE-306"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.2,"severity":"high","source":"CNA: suse","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":7.2,"severity":"high","source":"NVD: meissner@suse.de","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793645671754,"publishedAt":1793636986733,"references":[{"source":"CNA: suse","tags":["vendor-advisory"],"url":"https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"},{"source":"meissner@suse.de","tags":[],"url":"https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"},{"source":"GitHub Security Advisories","tags":["advisory"],"url":"https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"}],"remediation":[{"kind":"fix","source":"GitHub GHSA-f898-2c8h-r7jc","text":"github.com/rancher/webhook (go): GitHub reports patched versions 0.11.4. Check the advisory for the affected release branch.","url":"https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"},{"kind":"fix","source":"GitHub GHSA-f898-2c8h-r7jc","text":"github.com/rancher/webhook (go): GitHub reports patched versions 0.12.1. Check the advisory for the affected release branch.","url":"https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"}],"revision":"d49e7f2cd4293212685ebd68badee08b3c3c52d99be4c4ee2bb3632589035ee3","sources":[{"modifiedAt":1793645671754,"name":"CNA: suse","retrievedAt":1793646557890,"url":"https://www.cve.org/CVERecord?id=CVE-2026-88810"},{"modifiedAt":1793639865647,"name":"NVD","retrievedAt":1793643573599,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88810"},{"modifiedAt":1793297220000,"name":"GitHub Security Advisories","retrievedAt":1793645709577,"url":"https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc"}],"ssvc":{"assessedAt":1793645654626,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Privilege escalation in downstream clusters via GlobalRole inheritedNamespacedRules","updatedAt":1793646557890}