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.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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Fixes
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References
History
Tue, 03 Feb 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
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Projects
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-02-03T17:40:24.803Z
Reserved: 2026-01-09T00:00:00.000Z
Link: CVE-2025-70559
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-02-03T18:16:17.783
Modified: 2026-02-03T18:16:17.783
Link: CVE-2025-70559
Redhat
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OpenCVE Enrichment
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Weaknesses
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