CyberRota Analysis
AI-GeneratedHugo versions from 0.123.0 to 0.163.0 are vulnerable due to a regression in the virtual filesystem that allows symlinks to bypass mount restrictions, enabling unauthorized access to files outside the designated mount tree. This could lead to exposure of sensitive information for users running Hugo in environments where untrusted themes or mounts are used. Users and organizations utilizing affected versions of Hugo should prioritize upgrading to version 0.163.1 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Hugo is a static site generator. From v0.123.0 through v0.163.0, Hugo's virtual filesystem is designed so that files under a mount cannot reach outside the mount tree, but a regression caused RootMappingFs.statRoot to call Stat, which follows symlinks, instead of Lstat, so a direct os.ReadFile "somefile" where somefile was a symlink pointing outside the mount would return the target's contents. This effectively let a symlink planted inside a theme or local mount read arbitrary files reachable to the user running hugo. This issue is fixed in v0.163.1.
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