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CVE-2021-4178 is an insecure deserialization vulnerability in the Fabric8 Kubernetes Client YAML unmarshalling functionality, specifically the unmarshalYaml method. A misconfigured use of SnakeYAML permits attacker-controlled YAML to trigger unsafe object deserialization. The issue affects Fabric8 Kubernetes Client versions beginning with 5.0.0-beta-1 and can result in arbitrary code execution when malicious YAML is processed.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Insecure deserialization vulnerability in the Kubernetes client unmarshalYaml method.
Kubernetes Java client insecure deserialization in its unmarshalYaml method.
An insecure deserialization vulnerability in the kubernetes-client unmarshalYaml method, addressed in the Red Hat build of Quarkus 2.2.5 security update.
An insecure deserialization vulnerability in the kubernetes-client unmarshalYaml method.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.