Path Traversal in Gohugoio Hugo
CVE-2026-109574
Hugo before v0.167.0 contains a path traversal vulnerability in css.Sass that allows malicious themes or modules to read files outside the project root through the Sass compiler's import fallback. Attackers can ship stylesheets with relative, absolute, or symlinked @import or @use targets to compile readable files into the published site CSS.
Vulnerability class: Path Traversal (Directory Traversal)
Published .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/gohugoio/hugo/security/advisories/GHSA-3jfr-vjcq-7jvf (vendor-advisory)
- www.vulncheck.com/advisories/hugo-before-0.167.0-path-traversal-via-css-sass-im… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109574?
- CVE-2026-109574 is a medium-severity vulnerability in Gohugoio Hugo, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-10-12.
- How severe is CVE-2026-109574?
- Medium severity. CVSS v3 base score is 5.5 out of 10.