Medium
Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-109574
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 17:10 UTC · Revision 1
Source evidence
Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback
core-osv · Original sourcePublished 12 Oct 2026, 22:21 UTC
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.
osv:CVE-2026-109574
Complete source record
{
"id": "918a218a48487646064315e746adb15badd263fde6662a24792821a41c561a4e",
"url": "https://osv.dev/vulnerability/CVE-2026-109574",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Hugo before v0.167.0 Path Traversal via css.Sass Import Fallback",
"summary": "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.",
"evidence": "osv:CVE-2026-109574",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-109574",
"aliases": [
"CVE-2026-109574",
"GHSA-3jfr-vjcq-7jvf"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/gohugoio/hugo",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "3fff6fb5c267dacb26280c78dbe8c344054249c8"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.167.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.167.0"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109574.json"
}
}
],
"modified": "2026-10-28T02:30:30.515297309Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109574.json",
"https://github.com/gohugoio/hugo/security/advisories/GHSA-3jfr-vjcq-7jvf",
"https://nvd.nist.gov/vuln/detail/CVE-2026-109574",
"https://www.vulncheck.com/advisories/hugo-before-0.167.0-path-traversal-via-css-sass-import-fallback"
],
"provider_metadata": {
"cwe_ids": [
"CWE-22"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109574.json"
}
},
"related_cves": [
{
"value": "CVE-2026-109574",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 497714,
"published_at": "2026-10-12T22:21:50.021+00:00"
}