CVE Alert: CVE-2025-47281
Vulnerability Summary: CVE-2025-47281
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.
Affected Endpoints:
No affected endpoints listed.
Published Date:
7/23/2025, 9:15:26 PM
🔥 CVSS Score:
Exploit Status:
Not ExploitedReferences:
- https://github.com/kyverno/kyverno/commit/cbd7d4ca24de1c55396fc3295e9fc3215832be7c
- https://github.com/kyverno/kyverno/security/advisories/GHSA-r5p3-955p-5ggq
- https://github.com/kyverno/kyverno/security/advisories/GHSA-r5p3-955p-5ggq
Recommended Action:
No proposed action available. Please refer to vendor documentation for updates.
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