Denial of Service Vulnerability in Kyverno Cloud Native Policy Engine
CVE-2025-47281

7.7HIGH

Key Information:

Vendor

Kyverno

Status
Kyverno
Vendor
CVE Published:
23 July 2025

What is CVE-2025-47281?

Inversions 1.14.1 and earlier, Kyverno, a policy engine for cloud native platforms, is susceptible to a Denial of Service (DoS) attack due to improper handling of JMESPath variable substitutions. An attacker with permission to modify Kyverno policies can exploit this vulnerability by crafting expressions that lead to nil values being inserted into the policy structure. This results in panic events within the internal functions designed to process expected string values, such as getValueAsStringMap, ultimately crashing worker threads of the Kyverno admission controller and causing repeated failures of the reports controller pod. The issue is resolved in version 1.14.2.

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Affected Version(s)

kyverno < 1.14.2

References

https://github.com/kyverno/kyverno/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/kyverno/kyverno/commit/cbd7d4ca24de1c5...
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CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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