# CVE-2026-122319: Kyverno before 1.19.2 Denial of Service via In/NotIn Operator Panic

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

Kyverno before 1.19.2 contains a denial-of-service vulnerability in the In and NotIn operators that allows attackers to crash the policy engine via an unchecked type assertion. Attackers can submit resources whose JMESPath-evaluated values yield arrays of integers, booleans, or mixed types, triggering a panic that disrupts admission control and policy enforcement.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- kyverno / kyverno: ≥ 0; < 1.19.2 (affected, semver); 1.19.2 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-704

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/kyverno/kyverno/security/advisories/GHSA-r2p2-3892-5jjf (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-in-notin-operator-panic (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-122319; retrieved 2026-11-05; source updated 2026-11-05

Revision: 265cf13218a18c976f4daf5077ab73c2d8b6317b0236a0ec1340a5f5291b07c8

Canonical: https://y2.dev/cve/CVE-2026-122319

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