CVE-2026-58403

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.

References

https://github.com/gohugoio/hugo/security/advisories/GHSA-c3wq-j5vh-68rc

https://github.com/gohugoio/hugo/releases/tag/v0.163.1

https://github.com/gohugoio/hugo/pull/15020

https://github.com/gohugoio/hugo/commit/cf9c8f93ca2a2838ce378f9e36d052ac2f79e229

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4