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Python Libraries in AI/ML Models Vulnerable to Metadata Poisoning

Python Libraries in AI/ML Models Vulnerable to Metadata Poisoning

First seen 14 Jan 2026, 02:09 UTC

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ThreatCluster AI
ThreatCluster March 12, 2026 at 13:27 UTC

Vulnerabilities have been identified in popular AI and ML Python libraries used in Hugging Face models, allowing remote attackers to embed malicious code in metadata. This code executes automatically when a file with the poisoned metadata is loaded. The affected libraries include NeMo, Uni2TS, and FlexTok, developed by Nvidia, Salesforce, and Apple in collaboration with EPFL VILAB.

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