Feast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code execution by sending a crafted gRPC request to the registry server. The user_defined_function.body field of an OnDemandFeatureView spec is decoded from base64 and passed to dill.loads() before any authorization check is performed, enabling attackers to embed a malicious serialized Python object with an arbitrary __reduce__ method to execute OS commands as the feast service account.
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History
Wed, 24 Jun 2026 16:30:00 +0000
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Wed, 24 Jun 2026 15:30:00 +0000
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| Description | Feast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code execution by sending a crafted gRPC request to the registry server. The user_defined_function.body field of an OnDemandFeatureView spec is decoded from base64 and passed to dill.loads() before any authorization check is performed, enabling attackers to embed a malicious serialized Python object with an arbitrary __reduce__ method to execute OS commands as the feast service account. | |
| Title | Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization | |
| Weaknesses | CWE-502 | |
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-06-24T16:03:10.790Z
Reserved: 2026-06-18T19:15:10.651Z
Link: CVE-2026-56121
Updated: 2026-06-24T16:03:06.729Z
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OpenCVE Enrichment
Updated: 2026-06-24T16:30:06Z