CVE-2026-39822 — Root escape via symlink plus trailing slash in os
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…
Published: 2026-07-08 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7