CVE-2026-62999

HIGH

Copier 9.5.0-9.16.0 Template URLs - Trusted Prefix Bypass

Title source: manual
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.0029
EPSS Percentile 21.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-180 CWE-22
Status published
Products (1)
copier-org/copier >= 9.5.0, <= 9.16.0
Published Jul 31, 2026
Tracked Since Aug 01, 2026