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CVE-2026-39822

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-39822

Severity

7.8

High

CVSS V3

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Summary

Root escape via symlink plus trailing slash in os

Description

On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.

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