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CVE-2026-23968
Good to know:
Date: January 21, 2026
Copier is a library and CLI app for rendering project templates. Prior to version 9.11.2, Copier suggests that it's safe to generate a project from a safe template, i.e. one that doesn't use unsafe features like custom Jinja extensions which would require passing the "--UNSAFE,--trust" flag. As it turns out, a safe template can currently include arbitrary files/directories outside the local template clone location by using symlinks along with "_preserve_symlinks: false" (which is Copier's default setting). Version 9.11.2 patches the issue.
Severity Score
Related Resources (5)
Severity Score
Weakness Type (CWE)
UNIX Symbolic Link (Symlink) Following
CWE-61Top Fix
Upgrade Version
Upgrade to version copier - 9.11.2;https://github.com/copier-org/copier.git - v9.11.2
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | LOCAL |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | REQUIRED |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | NONE |
| Availability (A): | NONE |