Vulnerability · Published Nov 5, 2026 · Assigned by VulnCheck
CVE-2026-122319Kyverno before 1.19.2 Denial of Service via In/NotIn Operator Panic
High 7.5
In plain English
A high-severity security flaw in kyverno from kyverno. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 79.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-704 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-r2p2-3892-5jjf) vendor-advisory
- VulnCheck Advisory: Kyverno before 1.19.2 Denial of Service via In/NotIn Operator Panic third-party-advisory