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CVE-2025-55201

Published: Aug 18, 2025

Modified: Aug 18, 2025

PUBLISHED

Description

Copier library and CLI app for rendering project templates. Prior to 9.9.1, a safe template can currently read and write arbitrary files because Copier exposes a few pathlib.Path objects in the Jinja context which have unconstrained I/O methods. This effectively renders the security model w.r.t. filesystem access useless. This vulnerability is fixed in 9.9.1.

Vendor	Product	Versions
copier-org	copier	affected `< 9.9.1`

Weaknesses (CWE)

References

https://github.com/copier-org/copier/security/advisories/GHSA-3xw7-v6cj-5q8h

x_refsource_CONFIRM

https://github.com/copier-org/copier/commit/3feea3b3ff3c20d80cbb16a2f3b9567ffc5606d1

x_refsource_MISC

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