{"data":{"id":"f092b419-101b-4be5-97ed-68be2d95878e","title":"GHSA-mw35-8rx3-xf9r: Ray: Remote Code Execution via Parquet Arrow Extension Type Deserialization","summary":"Ray Data registers custom Arrow extension types (special data format handlers) globally in PyArrow, and when PyArrow reads a Parquet file (a data storage format) containing these types, it automatically deserializes metadata bytes using cloudpickle.loads(), which can execute arbitrary code. This vulnerability was reintroduced in July 2025 after a similar issue was supposedly fixed in May 2024, allowing attackers to run malicious code just by having Ray read a specially crafted Parquet file.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-mw35-8rx3-xf9r","publishedAt":"2026-04-24T16:15:00.000Z","cveId":"CVE-2026-41486","cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["supply_chain"],"issueType":"vulnerability","affectedPackages":["ray@>= 2.49.0, < 2.55.0 (fixed: 2.55.0)"],"affectedVendors":["HuggingFace"],"affectedVendorsRaw":["Ray","PyArrow","cloudpickle"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0,"patchAvailable":true,"disclosureDate":"2026-04-24T16:15:00.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity","confidentiality","availability"],"aiComponentTargeted":"framework","llmSpecific":false,"classifierConfidence":0.92,"researchCategory":null,"atlasIds":["AML.T0010"]}}