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CVE-2025-64512

🔴 HIGH

Pdfminer.six is a community maintained fork of the original PDFMiner, a tool for extracting information from PDF documents. Prior to version 20251107, pdfminer.six will execute arbitrary code from a m...

Published
Nov 10, 2025
Last Modified
Nov 12, 2025
Views
3
Bookmarks
0

Description

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Pdfminer.six is a community maintained fork of the original PDFMiner, a tool for extracting information from PDF documents. Prior to version 20251107, pdfminer.six will execute arbitrary code from a malicious pickle file if provided with a malicious PDF file. The `CMapDB._load_data()` function in pdfminer.six uses `pickle.loads()` to deserialize pickle files. These pickle files are supposed to be part of the pdfminer.six distribution stored in the `cmap/` directory, but a malicious PDF can specify an alternative directory and filename as long as the filename ends in `.pickle.gz`. A malicious, zipped pickle file can then contain code which will automatically execute when the PDF is processed. Version 20251107 fixes the issue.

CVSS Scores

CVSS 3.1 8.6
8.6
HIGH
CVSS 2.0 8.6

References

github.com github.com github.com github.com

Additional Information

Source
security-advisories@github.com
State
Awaiting analysis

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