# CVE-2026-62999

## Summary

- **CVE ID:** CVE-2026-62999
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
- **CWE:** CWE-22, CWE-180
- **Published:** Jul 31, 2026
- **Last Modified:** Jul 31, 2026

## 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.

## Affected Products

- copier-org — copier (>= 9.5.0, <= 9.16.0)

## References

- [CNA](https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch)
- [CNA](https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295)
- [CNA](https://github.com/copier-org/copier/releases/tag/v9.17.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._