CVE-2025-70559: PYSEC-2026-1761 - Insecure Deserialization (pickle) in pdfminer.six CMap Loader , Local Privesc

CVE-2025-70559 · Severity: low · CVSS 3.1 · Published 2026-07-07

Insecure Deserialization (pickle) in pdfminer.six CMap Loader — Local Privesc

Technologies: pdfminer-six (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-70559 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-70559 being exploited in the wild.
How severe is CVE-2025-70559?
Low severity, with a CVSS score of 3.1, published 7 July 2026.
Which products and versions are affected?
pdfminer-six (PyPI) ECOSYSTEM:introduced=0,fixed=20251230.
Is there a fix for CVE-2025-70559?
Yes. pdfminer-six (PyPI): upgrade to 20251230 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-70559?
Check whether you run pdfminer-six (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • pdfminer-six (PyPI): upgrade to 20251230 or later
    pip install "pdfminer-six>=20251230"

Affected products

  • pdfminer-six (PyPI) ECOSYSTEM:introduced=0,fixed=20251230

Identifiers

  • CVE-2025-70559
  • GHSA-f83h-ghpp-7wcc
  • PYSEC-2026-1761

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