CVE-2026-122315: Kyverno unchecked type assertion in buildStatementMap

CVE-2026-122315 · Severity: high · CVSS 7.5 · Published 2026-11-05

Kyverno is a policy engine that validates Kubernetes container images using attestations. An attacker who can push a malicious OCI referrer manifest can crash the policy engine with a crafted type field, bypassing image verification rules or causing denial of service in the reports controller.

Technologies: Kyverno. Vendors: Kyverno.

Quick answers

Is CVE-2026-122315 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-122315 being exploited in the wild.
How severe is CVE-2026-122315?
High severity, with a CVSS score of 7.5, published 5 November 2026.
Which products and versions are affected?
Kyverno before 1.19.2.
Is there a fix for CVE-2026-122315?
Yes: fixed in 1.19.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-122315 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-122315?
Check whether you run Kyverno at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 1.19.2

Technical details

An unchecked type assertion in buildStatementMap (pkg/engine/internal/utils.go:101) expects the "type" field to be a string but does not validate the type before casting, causing a Go panic when the field is a JSON number, boolean, array, or object. The attestation statements are extracted directly from attacker-controlled OCI manifest JSON with only a nil check. No authentication is required; when a verifyImages rule declares attestations but no attestor certificate, the check is skipped entirely.

Affected products

  • Kyverno Kyverno before 1.19.2

Timeline

  • 2026-10-21: disclosed
  • 2026-11-05: advisory

References

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