CVE-2026-88810 SUSE Rancher - Privilege Escalation

SUSE Rancher 2.15.2 and SUSE Rancher Webhook 0.11.0 to 0.11.4, 0.12.0 to 0.12.1 contain a privilege escalation caused by lack of validation on inheritedNamespacedRules in GlobalRole, letting non-administrative users gain excessive permissions in downstream clusters via global role binding, exploit requires user to have a global role binding.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
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Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
2 November 2026
Updated
3 November 2026
Weakness
CWE-306

Vendor fix

Update SUSE Rancher to a version later than 2.15.2 and SUSE Rancher Webhook beyond 0.11.4 and 0.12.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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