CVE-2026-100706 Kyverno - Broken Access Control

Kyverno < 1.19.1 contains a broken access control caused by improper validation of URL-encoded path segments in Policy apiCall urlPath, letting namespace tenants bypass namespace restrictions and escalate privileges to cluster admin, exploit requires namespace tenant privileges.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.61% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation, Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
26 September 2026
Updated
15 October 2026
Weakness
CWE-441

Vendor fix

Update to version 1.19.1 or later.

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

← All CVEs