CVE-2026-62999
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
55/100
Published: 2026-07-31
Modified: 2026-10-23
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
None
UI:
Required
S:
Unchanged
C:
High
I:
High
A:
High
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.