Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| gohugoio | hugo | < 0.167.0 | 0.167.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | hugo | 0.167.0-1 | — |
| Debian 13 | hugo | No fix yet | — |
| Debian 12 | hugo | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | hugo | No fix yet | — |
| Ubuntu 26.04 LTS | hugo | No fix yet | — |
| Ubuntu 22.04 LTS | hugo | No fix yet | — |
| Ubuntu 20.04 LTS | hugo | No fix yet | — |
| Ubuntu 18.04 LTS | hugo | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | hugo | No fix yet | — |
| Ubuntu Pro 24.04 LTS | hugo | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | hugo | 0.167.0-0.2.hum1 | RHSA-2026:80677 |
Advisories 1
- RHSA-2026:80677 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
References
- GitHub Security Advisory (GHSA-3jfr-vjcq-7jvf) vendor-advisory
- VulnCheck Advisory: Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback third-party-advisory