CVE-2025-47281 (GCVE-0-2025-47281)

Vulnerability from cvelistv5 – Published: 2025-07-23 20:35 – Updated: 2025-07-23 20:49
VLAI
Title
Kyverno's Improper JMESPath Variable Evaluation Leads to Denial of Service
Summary
Kyverno is a policy engine designed for cloud native platform engineering teams. In versions 1.14.1 and below, a Denial of Service (DoS) vulnerability exists due to improper handling of JMESPath variable substitutions. Attackers with permissions to create or update Kyverno policies can craft expressions using the {{@}} variable combined with a pipe and an invalid JMESPath function (e.g., {{@ | non_existent_function }}). This leads to a nil value being substituted into the policy structure. Subsequent processing by internal functions, specifically getValueAsStringMap, which expect string values, results in a panic due to a type assertion failure (interface {} is nil, not string). This crashes Kyverno worker threads in the admission controller and causes continuous crashes of the reports controller pod. This is fixed in version 1.14.2.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-23 20:49 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-248 - Uncaught Exception
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7993 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
kyverno kyverno Affected: < 1.14.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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