CVE-2026-122320

High

Description

Kyverno before 1.19.2 contains a missing authorization vulnerability that allows namespaced Policy authors to read resources in other namespaces by templating generate.clone or cloneList namespace values. Attackers can annotate a triggering ConfigMap so the background-controller copies a victim namespace's sensitive ConfigMap into the attacker's namespace, enabling cross-tenant data disclosure.

SeverityHigh

CVSS7.7

Exploit probability12. percentile0.2%

ProductKyverno

PublishedNov 5, 2026

First seenNov 5, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

kyverno kyverno1.19.2 or later

Vendor advisories

github.com/kyverno/kyverno/security/advisories/GHSA-493q-9xvg-9xf3

Affected products

Product	Affected versions	Fixed in
kyverno kyverno	v < 1.19.2	1.19.2

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