Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/copier-org/copier/commit/3feea3b3ff3c20d80cbb16a2f3b9567ffc56
- https://github.com/copier-org/copier/security/advisories/GHSA-3xw7-v6cj-5q8h
FAQ
What is CVE-2025-55201?
CVE-2025-55201 is a documented vulnerability. 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 ...
How severe is CVE-2025-55201?
CVSS scoring is not yet available for CVE-2025-55201. Check NVD for updates.
Is there a patch for CVE-2025-55201?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.