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GO-2026-4970
Root escape via symlink plus trailing slash in os
Quick fix
GO-2026-4970 — stdlib: upgrade to the fixed version with the command below.
go get stdlib@v1.25.12Details
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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