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Copier safe template has arbitrary filesystem write access via directory symlinks when _preserve_symlinks: true

🗓️ 07 Jul 2026 16:03:19Reported by Python Packaging AdvisoryType 
pypa
 pypa
🔗 github.com👁 2 Views

Copier safe templates can write outside destination via symlinks with preserve_symlinks, enabling arbitrary overwrites.

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07 Jul 2026 17:23Current
6Medium risk
Vulners AI Score6
CVSS 46.9
CVSS 3.17.1
EPSS0.00224
SSVC
2