CVE-2026-50135 Hugo: Symlink confinement bypass in resources.Get

Medium 6.9 Published 6 Jul 2026 Updated 7 Jul 2026

A regression in Hugo allows attackers to read arbitrary files via symlinks in vendored themes, bypassing confinement restrictions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-50135?

CVE-2026-50135 is a medium-severity path traversal vulnerability in gohugoio hugo, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Hugo is a static site generator. From 0.123.0 to 0.161.1, a regression made RootMappingFs.statRoot use Stat (follows symlinks) instead of Lstat , so a direct resources.Get of a symlink pointing outside its mount returned the target's contents — letting a symlink planted in a local mount (e.g. a vendored themes/ theme) read arbitrary files accessible to the Hugo user. Go-module themes from GitHub (symlinks stripped) and directory walks were unaffected. Fixed in 0.162.0.

Weakness: CWE-59

Which versions are affected by CVE-2026-50135?

3 open source packages ship an affected version, including github.com/gohugoio/hugo. It affects 1 product.

Package	Affected	Fixed in
`github.com/gohugoio/hugo` Go	From `0.123.0`	`0.162.0`
`github.com/gohugoio/hugo` Go	From `0.123.0`	`0.162.0`
`github.com/gohugoio/hugo` Go	From `0.123.0`	`0.162.0`

Products include Gohugo Hugo.

How do I fix CVE-2026-50135?

Upgrade github.com/gohugoio/hugo to 0.162.0 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-50135 being exploited?

There is no known exploitation of CVE-2026-50135 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2026-50135, GHSA-fw87-fv5r-9fpw, GO-2026-5380, UBUNTU-CVE-2026-50135.