High
hugo — security advisory
Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation flaw in the security.http.urls IP-literal deny rule that allows attackers to bypass restrictions. Attackers can use mixed-case URL schemes in resources.GetRemote calls to fetch from restricted IP addresses like localhost.
- Products
- hugo
- Affected versions
- 0.113.0-3, 0.119.0-2, 0.120.3-1, 0.120.4-1, 0.121.2-1, 0.122.0-1, 0.123.7-1build1, 0.123.7-1ubuntu0.1, 0.123.7-1ubuntu0.2, 0.123.7-1ubuntu0.2+esm1, 0.123.7-1ubuntu0.3, 0.123.7-1ubuntu0.3+esm1, 0.123.7-1ubuntu0.3+esm2, 0.131.0-1, 0.15+git20160109.147.dd1d655-1, 0.15+git20160109.147.dd1d655-2, 0.15+git20160128.179.5def6d9-1, 0.15+git20160206.203.ed23711-1, 0.152.2-1, 0.153.1-3, 0.153.2-1, 0.154.2-2, 0.154.3-1, 0.154.5-1, 0.162.1-5, 0.162.1-7, 0.25.1-2, 0.26-1, 0.35-1, 0.37.1-1, 0.38-1, 0.39-1, 0.40-1, 0.40.1-1, 0.57.2-1, 0.58.3-1, 0.59.1-1.1, 0.68.3-1, 0.80.0-6, 0.89.4-2, 0.90.0-1, 0.90.1-1, 0.91.0-1, 0.91.2-1, 0.92.0-1, 0.92.1-1build1, 0.92.2-1, 0.92.2-1ubuntu0.1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-100693
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:56 UTC · Revision 1
Source evidence
Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation flaw in the security.http.urls IP-literal deny rule that allows attackers to bypass restrictions. Attackers can use mixed-case URL schemes in resources.GetRemote calls to fetch from restricted IP addresses like localhost.
osv:UBUNTU-CVE-2026-100693
hugo
Fixed versions: Not specified
hugo
Fixed versions: Not specified
hugo
Fixed versions: Not specified
hugo
Fixed versions: Not specified
hugo
Fixed versions: Not specified
hugo
Fixed versions: Not specified
hugo
Fixed versions: Not specified
Complete source record
{
"id": "4afa33d405ee281dcdf3b23e239cf979141312b5f185b4309ee7d2540e7f55a7",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-100693",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-100693",
"summary": "Hugo versions from v0.162.0 before v0.166.0 contain a case-sensitive validation flaw in the security.http.urls IP-literal deny rule that allows attackers to bypass restrictions. Attackers can use mixed-case URL schemes in resources.GetRemote calls to fetch from restricted IP addresses like localhost.",
"evidence": "osv:UBUNTU-CVE-2026-100693",
"products": [
{
"name": {
"value": "hugo",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.15+git20160109.147.dd1d655-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15+git20160109.147.dd1d655-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.15+git20160128.179.5def6d9-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15+git20160206.203.ed23711-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "hugo",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.25.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "0.26-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.35-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.37.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.38-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.39-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.40-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.40.1-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "hugo",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.57.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.58.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.59.1-1.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.68.3-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "hugo",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.80.0-6",
"evidence": "/affected/3/versions"
},
{
"value": "0.89.4-2",
"evidence": "/affected/3/versions"
},
{
"value": "0.90.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.90.1-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.91.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.91.2-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.92.0-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.92.1-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "0.92.2-1",
"evidence": "/affected/3/versions"
},
{
"value": "0.92.2-1ubuntu0.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "hugo",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.113.0-3",
"evidence": "/affected/4/versions"
},
{
"value": "0.119.0-2",
"evidence": "/affected/4/versions"
},
{
"value": "0.120.3-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.120.4-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.121.2-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.122.0-1",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1ubuntu0.1",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1ubuntu0.2",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1ubuntu0.2+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1ubuntu0.3",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1ubuntu0.3+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "0.123.7-1ubuntu0.3+esm2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "hugo",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.154.5-1",
"evidence": "/affected/5/versions"
},
{
"value": "0.162.1-5",
"evidence": "/affected/5/versions"
},
{
"value": "0.162.1-7",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "hugo",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.131.0-1",
"evidence": "/affected/6/versions"
},
{
"value": "0.152.2-1",
"evidence": "/affected/6/versions"
},
{
"value": "0.153.1-3",
"evidence": "/affected/6/versions"
},
{
"value": "0.153.2-1",
"evidence": "/affected/6/versions"
},
{
"value": "0.154.2-2",
"evidence": "/affected/6/versions"
},
{
"value": "0.154.3-1",
"evidence": "/affected/6/versions"
},
{
"value": "0.154.5-1",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-100693",
"aliases": [
"UBUNTU-CVE-2026-100693"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.15+git20160109.147.dd1d655-1",
"0.15+git20160109.147.dd1d655-2",
"0.15+git20160128.179.5def6d9-1",
"0.15+git20160206.203.ed23711-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-spf13-hugo-dev",
"binary_version": "0.15+git20160206.203.ed23711-1"
},
{
"binary_name": "hugo",
"binary_version": "0.15+git20160206.203.ed23711-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.25.1-2",
"0.26-1",
"0.35-1",
"0.37.1-1",
"0.38-1",
"0.39-1",
"0.40-1",
"0.40.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-gohugoio-hugo-dev",
"binary_version": "0.40.1-1"
},
{
"binary_name": "hugo",
"binary_version": "0.40.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.57.2-1",
"0.58.3-1",
"0.59.1-1.1",
"0.68.3-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hugo",
"binary_version": "0.68.3-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.80.0-6",
"0.89.4-2",
"0.90.0-1",
"0.90.1-1",
"0.91.0-1",
"0.91.2-1",
"0.92.0-1",
"0.92.1-1build1",
"0.92.2-1",
"0.92.2-1ubuntu0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hugo",
"binary_version": "0.92.2-1ubuntu0.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"0.113.0-3",
"0.119.0-2",
"0.120.3-1",
"0.120.4-1",
"0.121.2-1",
"0.122.0-1",
"0.123.7-1build1",
"0.123.7-1ubuntu0.1",
"0.123.7-1ubuntu0.2",
"0.123.7-1ubuntu0.2+esm1",
"0.123.7-1ubuntu0.3",
"0.123.7-1ubuntu0.3+esm1",
"0.123.7-1ubuntu0.3+esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hugo",
"binary_version": "0.123.7-1ubuntu0.3+esm2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"0.154.5-1",
"0.162.1-5",
"0.162.1-7"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hugo",
"binary_version": "0.162.1-7"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "hugo",
"purl": "pkg:deb/ubuntu/hugo?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.131.0-1",
"0.152.2-1",
"0.153.1-3",
"0.153.2-1",
"0.154.2-2",
"0.154.3-1",
"0.154.5-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100693.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hugo",
"binary_version": "0.154.5-1"
}
]
}
}
],
"modified": "2026-10-17T12:57:52.213820056Z",
"provider": "osv",
"upstream": [
"CVE-2026-100693"
],
"references": [
"https://ubuntu.com/security/CVE-2026-100693",
"https://www.cve.org/CVERecord?id=CVE-2026-100693",
"https://github.com/gohugoio/hugo/security/advisories/GHSA-pmrv-x7gp-2rjw",
"https://www.vulncheck.com/advisories/hugo-0.162.0-before-0.166.0-ip-literal-deny-rule-bypass"
]
},
"related_cves": [
{
"value": "CVE-2026-100693",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 357697,
"published_at": "2026-09-26T14:16:00+00:00"
}