CVE-2026-23968

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/copier-org/copier/commit/b3a7b3772d17cf0e7a4481978188c9f536c8d8f6	Patch
https://github.com/copier-org/copier/security/advisories/GHSA-xjhm-gp88-8pfx	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:copier-org:copier:*:*:*:*:*:python:*:*

History

02 Feb 2026, 14:11

Type	Values Removed	Values Added
First Time		Copier-org copier Copier-org
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
References	~~() https://github.com/copier-org/copier/commit/b3a7b3772d17cf0e7a4481978188c9f536c8d8f6 -~~	() https://github.com/copier-org/copier/commit/b3a7b3772d17cf0e7a4481978188c9f536c8d8f6 - Patch
References	~~() https://github.com/copier-org/copier/security/advisories/GHSA-xjhm-gp88-8pfx -~~	() https://github.com/copier-org/copier/security/advisories/GHSA-xjhm-gp88-8pfx - Exploit, Third Party Advisory
CPE		cpe:2.3:a:copier-org:copier::::::python::*

21 Jan 2026, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-21 23:15

Updated : 2026-02-02 14:11

NVD link : CVE-2026-23968

Mitre link : CVE-2026-23968

CVE.ORG link : CVE-2026-23968

JSON object : View

Products Affected

copier-org

copier

CWE

CWE-61

UNIX Symbolic Link (Symlink) Following

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