CVE-2026-62999
Published:July 31, 2026
Updated:August 04, 2026
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.
Affected Packages
copier (CONDA):
Affected version(s) >=9.5.0 <9.17.0Fix Suggestion:
Update to version 9.17.0https://github.com/copier-org/copier.git (GITHUB):
Affected version(s) >=v9.5.0 <v9.17.0Fix Suggestion:
Update to version v9.17.0copier (PYTHON):
Affected version(s) >=9.5.0 <9.17.0Fix Suggestion:
Update to version 9.17.0Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.29