HIGH 7.5 NVD
CVE-2026-62999
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
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
- https://github.com/copier-org/copier/commit/7408f0d6287a7bf452715fd9f25dc54eaba3c295
- https://github.com/copier-org/copier/releases/tag/v9.17.0
- https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch
- https://github.com/copier-org/copier/security/advisories/GHSA-34mv-rjq9-5mch
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-07-31 via NVD.
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