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CVE-2026-84200— Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions

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是Kyverno团队开源的一款云原生安全基线管理工具。 Kyverno 1.9.0版本至1.12.7版本存在权限许可和访问控制问题漏洞，该漏洞源于策略异常处理缺陷，当强制模式下的策略与两个策略异常结合时，限制较少的异常优先，允许攻击者通过构造匹配第二个异常名称模式的资源名称绕过策略，从而规避阻止hostPath卷等策略。

CVSS 9.0 · Critical EPSS 0.27% · P18

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 2

VendorProduct Version RangeStatus
kyverno kyverno < 1.13.0 affected
1.13.0 unaffected
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I. Basic Information for CVE-2026-84200

Vulnerability Information
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Vulnerability Title
Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions
Source: CVE Program / CVE List V5
Vulnerability Description
Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw. When a policy in enforce mode is combined with two PolicyExceptions, the less restrictive exception takes precedence, allowing an attacker to bypass the policy by crafting a resource name that matches the second exception's name pattern (e.g., '*ingress*'). This can be used to circumvent policies such as one blocking hostPath volumes. Fixed in v1.13.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kyverno 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kyverno是Kyverno团队开源的一款云原生安全基线管理工具。 Kyverno 1.9.0版本至1.12.7版本存在权限许可和访问控制问题漏洞，该漏洞源于策略异常处理缺陷，当强制模式下的策略与两个策略异常结合时，限制较少的异常优先，允许攻击者通过构造匹配第二个异常名称模式的资源名称绕过策略，从而规避阻止hostPath卷等策略。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kyverno kyverno 0 ~ 1.13.0 -

II. Public POCs for CVE-2026-84200

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III. Intelligence Information for CVE-2026-84200

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Vendor Advisories for CVE-2026-84200 (2)

Same Patch Batch · kyverno · 2026-09-01 · 6 CVEs total

CVE-2026-84199 7.7 HIGH Kyverno before 1.16.2 SSRF via APICall Feature
CVE-2026-84195 7.7 HIGH Kyverno before 1.16.4 Credential Leak via apiCall
CVE-2026-84196 7.7 HIGH Kyverno before 1.18.0 Server-Side Request Forgery via apiCall
CVE-2025-15613 6.5 MEDIUM Kyverno before v1.13.4 SSRF via Service Call
CVE-2023-54356 3.7 LOW Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites

IV. Related Vulnerabilities

Same product: kyverno
Same vendor: kyverno
Same weakness: CWE-284

V. Comments for CVE-2026-84200

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