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CVE-2025-29778— Kyverno ignores subjectRegExp and IssuerRegExp

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开源的一个为 Kubernetes 设计的策略引擎。 Kyverno 1.14.0-alpha.1之前版本存在授权问题漏洞，该漏洞源于在无密钥模式下验证工件签名时忽略subjectRegExp和IssuerRegExp，可能导致部署未经授权的Kubernetes资源，从而完全控制Kubernetes集群。

CVSS 5.8 · Medium EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

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I. Basic Information for CVE-2025-29778

Vulnerability Information
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Vulnerability Title
Kyverno ignores subjectRegExp and IssuerRegExp
Source: CVE Program / CVE List V5
Vulnerability Description
Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to version 1.14.0-alpha.1, Kyverno ignores subjectRegExp and IssuerRegExp while verifying artifact's sign with keyless mode. It allows the attacker to deploy kubernetes resources with the artifacts that were signed by unexpected certificate. Deploying these unauthorized kubernetes resources can lead to full compromise of kubernetes cluster. Version 1.14.0-alpha.1 contains a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kyverno 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kyverno是Kyverno开源的一个为 Kubernetes 设计的策略引擎。 Kyverno 1.14.0-alpha.1之前版本存在授权问题漏洞，该漏洞源于在无密钥模式下验证工件签名时忽略subjectRegExp和IssuerRegExp，可能导致部署未经授权的Kubernetes资源，从而完全控制Kubernetes集群。
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 < 1.14.0-alpha.1 -

II. Public POCs for CVE-2025-29778

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III. Intelligence Information for CVE-2025-29778

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Patches & Fixes for CVE-2025-29778 (3)

Vendor Advisories for CVE-2025-29778 (2)

IV. Related Vulnerabilities

Same product: kyverno
Same vendor: kyverno
Same weakness: CWE-285

V. Comments for CVE-2025-29778

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