CVE-2026-23881
High
Description
Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.
SeverityHigh
CVSS7.7
Exploit probability—
ProductKyverno
PublishedJan 27, 2026
First seenJan 27, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- kyverno kyverno1.15.3, 1.16.3 or later
- github.com/kyverno/kyverno1.15.3, 1.16.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kyverno kyverno | v < 1.15.3, 1.16.0 ≤ v < 1.16.3 | 1.15.3, 1.16.3 |
| github.com/kyverno/kyvernoGo | v < 1.15.3, 1.16.0-rc.1 ≤ v < 1.16.3 | 1.15.3, 1.16.3 |
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