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CVE-2026-122308— Kyverno before 1.19.2 Label Spoofing via Generation Handler processRequest

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 之前的版本中，Generation Handler（生成处理器）存在一个授权绕过漏洞。该漏洞允许拥有创建或更新权限的用户，通过伪造内部 标签来触发同步生成策略。攻击者可以将一个 ConfigMap 标记为由 Kyverno 管理，并精心构造策略、规则和触发标签，从而将受限制命名空间中的敏感 Secrets 克隆到自己的命名空间中。

CVSS 8.5 · High
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I. Basic Information for CVE-2026-122308

Vulnerability Information
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Vulnerability Title
Kyverno before 1.19.2 Label Spoofing via Generation Handler processRequest
Source: CVE Program / CVE List V5
Vulnerability Description
Kyverno before 1.19.2 contains an authorization bypass vulnerability in the Generation Handler that allows users with create/update permissions to trigger synchronized generate policies by spoofing internal generate.kyverno.io labels. Attackers can label a ConfigMap as managed-by kyverno with crafted policy, rule, and trigger labels to clone sensitive Secrets from restricted namespaces into their own namespace.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
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-2026-122308

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III. Intelligence Information for CVE-2026-122308

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Other References for CVE-2026-122308 (2)

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

CVE-2026-122303 9.9 CRITICAL Kyverno 1.17.0 before 1.19.2 Cross-Namespace Resource Overwrite via NamespacedMutatingPoli
CVE-2026-122310 9.9 CRITICAL Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath
CVE-2026-122311 9.9 CRITICAL Kyverno 1.16.0 before 1.19.2 Path Traversal in Namespaced CEL Policies via resource argume
CVE-2026-122304 9.9 CRITICAL Kyverno 1.17.0 before 1.19.2 Privilege Escalation via CleanupPolicy Context Loader
CVE-2026-122313 9.9 CRITICAL Kyverno 1.17.0 before 1.19.2 Cross-Namespace Privilege Escalation via NamespacedMutatingPo
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-2026-122316 8.5 HIGH Kyverno 1.17.0 before 1.19.2 Cross-Namespace Write via NamespacedMutatingPolicy mutateExis
CVE-2026-122305 7.7 HIGH Kyverno before 1.19.2 Denial of Service via Nested Variable Substitution Loop
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-2026-122312 7.7 HIGH Kyverno 1.19.1 before 1.19.2 Namespace Isolation Bypass via APICall URLPath Query String
CVE-2026-122306 7.7 HIGH Kyverno before 1.19.2 Denial of Service via Exponential-Time Wildcard Matching
CVE-2026-122322 7.5 HIGH Kyverno from 1.11.0 before 1.19.2 Memory Exhaustion via Notary Attestation Decompression
CVE-2026-122314 7.5 HIGH Kyverno before 1.19.2 Denial of Service via Shallow Variable Substitution Panic
CVE-2026-122323 7.5 HIGH Kyverno 1.11.0 before 1.19.2 Memory Exhaustion via Notary Signature Decompression
CVE-2026-122319 7.5 HIGH Kyverno before 1.19.2 Denial of Service via In/NotIn Operator 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-639