{"cve":"CVE-2025-55201","nvd":{"published":"2025-08-18T17:15:29.933","modified":"2026-06-17T09:41:26.877","status":"Deferred","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.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.5},"cvss_v3":null,"cwes":["CWE-22"],"references":["https://github.com/copier-org/copier/commit/3feea3b3ff3c20d80cbb16a2f3b9567ffc5606d1","https://github.com/copier-org/copier/security/advisories/GHSA-3xw7-v6cj-5q8h"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:06:45.861874017+00:00"},"epss":{"cve":"CVE-2025-55201","score":0.00259,"percentile":0.17701,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3xw7-v6cj-5q8h","url":"https://osv.dev/vulnerability/GHSA-3xw7-v6cj-5q8h","summary":"Copier's safe template has arbitrary filesystem read/write access","modified":"2026-07-07T17:57:08.156171846Z","packages":[{"ecosystem":"PyPI","name":"copier","purl":"pkg:pypi/copier","ranges":["<9.9.1"],"fixed":["9.9.1"]}]},{"id":"PYSEC-2026-1271","url":"https://osv.dev/vulnerability/PYSEC-2026-1271","summary":"Copier's safe template has arbitrary filesystem read/write access","modified":"2026-07-07T17:47:12.903110875Z","packages":[{"ecosystem":"PyPI","name":"copier","purl":"pkg:pypi/copier","ranges":["<9.9.1"],"fixed":["9.9.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}