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

Quick assessment

Affected

kyverno kyverno

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kyverno 1.19.2 之前的版本在和运算符中存在一个拒绝服务（DoS）漏洞。该漏洞源于未检查的类型断言，攻击者可通过提交资源，使其 JMESPath 求值结果为整数数组、布尔值数组或混合类型数组，从而触发策略引擎的 panic 错误，导致准入控制和策略执行中断。

CVSS 7.5 · High Updated Nov 05, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service

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Vulnerability Information

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Vulnerability Title

Kyverno before 1.19.2 Denial of Service via In/NotIn Operator Panic

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

不正确的类型转换

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
kyverno	kyverno	0 ~ 1.19.2	-

II. Public POCs for CVE-2026-122319

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-122319

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Other References for CVE-2026-122319 (2)

https://github.com/kyverno/kyverno/security/advisories/GHSA-r2p2-3892-5jjf vendor-advisory
https://www.vulncheck.com/advisories/kyverno-before-1.19.2-denial-of-service-via-in-notin-operator-panic third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-122319

Same Patch Batch · kyverno · 2026-11-05 · 21 CVEs total

CVE-2026-122313	9.9 CRITICAL	Kyverno 1.17.0 before 1.19.2 Cross-Namespace Privilege Escalation via NamespacedMutatingPo
CVE-2026-122310	9.9 CRITICAL	Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath
CVE-2026-122303	9.9 CRITICAL	Kyverno 1.17.0 before 1.19.2 Cross-Namespace Resource Overwrite via NamespacedMutatingPoli
CVE-2026-122304	9.9 CRITICAL	Kyverno 1.17.0 before 1.19.2 Privilege Escalation via CleanupPolicy Context Loader
CVE-2026-122311	9.9 CRITICAL	Kyverno 1.16.0 before 1.19.2 Path Traversal in Namespaced CEL Policies via resource argume
CVE-2026-122302	9.8 CRITICAL	Kyverno before 1.19.2 Privilege Escalation via Generate Rule Permission Check
CVE-2026-122321	9.1 CRITICAL	Kyverno 1.18.0 before 1.19.2 verifyImages Cache Signature Verification Bypass
CVE-2026-122308	8.5 HIGH	Kyverno before 1.19.2 Label Spoofing via Generation Handler processRequest
CVE-2026-122316	8.5 HIGH	Kyverno 1.17.0 before 1.19.2 Cross-Namespace Write via NamespacedMutatingPolicy mutateExis
CVE-2026-122320	7.7 HIGH	Kyverno before 1.19.2 Cross-Namespace Resource Read via generate.clone
CVE-2026-122307	7.7 HIGH	Kyverno before 1.19.2 Policy Bypass via admissionpolicygenerator PolicyException Handling
CVE-2026-122318	7.7 HIGH	Kyverno before 1.19.2 Cosign Identity Check Bypass via Empty SAN Certificates
CVE-2026-122306	7.7 HIGH	Kyverno before 1.19.2 Denial of Service via Exponential-Time Wildcard Matching
CVE-2026-122312	7.7 HIGH	Kyverno 1.19.1 before 1.19.2 Namespace Isolation Bypass via APICall URLPath Query String
CVE-2026-122305	7.7 HIGH	Kyverno before 1.19.2 Denial of Service via Nested Variable Substitution Loop
CVE-2026-122322	7.5 HIGH	Kyverno from 1.11.0 before 1.19.2 Memory Exhaustion via Notary Attestation Decompression
CVE-2026-122323	7.5 HIGH	Kyverno 1.11.0 before 1.19.2 Memory Exhaustion via Notary Signature Decompression
CVE-2026-122314	7.5 HIGH	Kyverno before 1.19.2 Denial of Service via Shallow Variable Substitution Panic
CVE-2026-122315	7.5 HIGH	Kyverno before 1.19.2 Image Verification Bypass via Attestation Type Panic
CVE-2026-122309	6.2 MEDIUM	Kyverno before 1.19.2 Denial of Service via Unbounded CEL Policy Evaluation Cost

IV. Related Vulnerabilities

Same product: kyverno

Same vendor: kyverno

Same weakness: CWE-704