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MEDIUM5.3

PYSEC-2025-247

Quick fix

PYSEC-2025-247 — llama-index: upgrade to the fixed version with the command below.

pip install --upgrade 'llama-index>=0.12.28'

Details

A vulnerability in the ArxivReader class of the run-llama/llama_index repository, versions up to v0.12.22.post1, allows for MD5 hash collisions when generating filenames for downloaded papers. This can lead to data loss as papers with identical titles but different contents may overwrite each other, preventing some papers from being processed for AI model training. The issue is resolved in version 0.12.28.

Are you affected?

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Affected packages

PyPI/llama-index
Introduced in: 0Fixed in: 0.12.28
Fixpip install --upgrade 'llama-index>=0.12.28'

References