CVE-2025-70559

MEDIUM

6.5

Description

pdfminer.six before 20251230 contains an insecure deserialization vulnerability in the CMap loading mechanism. The library uses Python pickle to deserialize CMap cache files without validation. An attacker with the ability to place a malicious pickle file in a location accessible to the application can trigger arbitrary code execution or privilege escalation when the file is loaded by a trusted process. This is caused by an incomplete patch to CVE-2025-64512.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/3/2026

Last Modified2/11/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-502

References

https://github.com/advisories/GHSA-f83h-ghpp-7wcc(cve@mitre.org)

https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-f83h-ghpp-7wcc(cve@mitre.org)

IOC Correlations

No correlations recorded

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