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.
CVSS 7.5EPSS 0.294%Risk 0.77
View source- Published
- 2026-07-31 20:16:53
- Affected versions
- <9.17.0
- Type
- Library
- Last modified
- 2026-07-31 20:16:53
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H