Detections
Analytics
CVE-2026-62999
high
Description
Copier is a library and CLI app for rendering project templates. From 9.5.0 through 9.16.0, percent-encoded parent-directory segments or encoded path separators in a template URL can match a configured trusted repository prefix before an HTTP server or Git transport decodes the path, allowing unsafe template features from a repository outside the trusted prefix to run after user interaction. This issue is fixed in version 9.17.0.
References
https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch
https://github.com/copier-org/copier/releases/tag/v9.17.0
https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295