Vulnerability · Published Nov 5, 2026 · Assigned by VulnCheck

CVE-2026-122314Kyverno before 1.19.2 Denial of Service via Shallow Variable Substitution 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 23% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 76.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Kyverno before 1.19.2 contains an unchecked type assertion in its variable-substitution engine that allows users who can submit resources to crash the policy engine. Attackers can submit resources with non-string fields referenced by {{- variable }} shallow substitution in policies, causing a panic that yields webhook denial of service and policy bypass under failurePolicy Ignore.

Affected products (as reported)

Vendor	Product	Versions
kyverno	kyverno	0 – before 1.19.2

Weakness: CWE-248 · 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-x4xq-p8g4-6fwg) vendor-advisory
VulnCheck Advisory: Kyverno before 1.19.2 Denial of Service via Shallow Variable Substitution Panic third-party-advisory