CVE-2026-109595

Medium

Description

Hugo from v0.84.0 before v0.167.0 contains a path traversal vulnerability that allows malicious themes or modules to read files outside the project root via ESBuild's fallback resolver in js.Build, js.Batch, and css.Build. Attackers can ship relative imports or symlinks pointing outside the project to bundle any file readable by the build user into published JavaScript or CSS output.

SeverityMedium

CVSS5.5

Exploit probability—

Product

Hugo

PublishedOct 12, 2026

First seenOct 12, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

gohugoio hugo0.167.0 or later

Vendor advisories

github.com/gohugoio/hugo/security/advisories/GHSA-r4xx-89rf-5424

Affected products

Product	Affected versions	Fixed in
gohugoio hugo	0.84.0 ≤ v < 0.167.0	0.167.0

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