What is CVE-2026-62999?

CVE-2026-62999 is a high-severity vulnerability in Copier-org Copier, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-07-31.

How severe is CVE-2026-62999?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Copier-org Copier

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 in a template URL can match a configured trusted repository prefix before an H…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Copier-org Copier — versions >= 9.5.0, <= 9.16.0

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-62999?: CVE-2026-62999 is a high-severity vulnerability in Copier-org Copier, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-07-31.
How severe is CVE-2026-62999?: High severity. CVSS v3 base score is 7.5 out of 10.