CVE-2026-34726
MEDIUM 4.4EPSS 0.4%
Copier is a library and CLI app for rendering project templates. Prior to version 9.14.1, Copier's _subdirectory setting is documented as the subdirectory to use as the template root. However, the current implementation accepts parent-directory traversal such as .. and uses it directly when selecting the template root. As a result, a template can escape its own directory and make Copier render files from the parent directory without --UNSAFE. This issue has been patched in version 9.14.1.
- CVSS v3.1
- 4.4 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - CVSS v3.1
- 4.4 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - EPSS
- 0.38% chance of exploitation in the next 30 days, 31th percentile
- Published
- 2026-04-02
- Updated
- 2026-04-03