PT-2026-66849 · Copier Org · Copier

CVE-2026-62999 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Exploit

Fix

Path traversal

Weakness Enumeration

CWE-22

CWE-180

Related Identifiers

CVE-2026-62999

Affected Products

Copier

References · 4

• 🔥 https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-62999 · Security Note
• https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295 · Note
• https://github.com/copier-org/copier/releases/tag/v9.17.0 · Note