High
hugo — security advisory
Hugo's security.http.urls allowlist is the only control on outbound fetches made by resources.GetRemote, and it inspects the URL text alone. CheckAllowedHTTPURL in config/security/securityConfig.go applies the configured pattern list and then re-checks a canonicalised form of an integer, hex or octal IPv4 host, but it never resolves the hostname and never inspects the address the HTTP client actually connects to. The client constructed in resources/resource_factories/create/create.go installs no dial-time hook, so no check occurs at connection time either. A hostname that resolves to a loopback, private or cloud-metadata address therefore satisfies the policy, and the response body is embedded in the generated site. An attacker who can supply a URL through content, for example a front-matter field or a CMS field, can make the build fetch an internal endpoint and publish the response in the static output, so the build artifact itself carries the data out.
- 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-2026-10582
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:53 UTC · Revision 1
Source evidence
Hugo's security.http.urls allowlist is the only control on outbound fetches made by resources.GetRemote, and it inspects the URL text alone. CheckAllowedHTTPURL in config/security/securityConfig.go applies the configured pattern list and then re-checks a canonicalised form of an integer, hex or octal IPv4 host, but it never resolves the hostname and never inspects the address the HTTP client actually connects to. The client constructed in resources/resource_factories/create/create.go installs no dial-time hook, so no check occurs at connection time either. A hostname that resolves to a loopback, private or cloud-metadata address therefore satisfies the policy, and the response body is embedded in the generated site. An attacker who can supply a URL through content, for example a front-matter field or a CMS field, can make the build fetch an internal endpoint and publish the response in the static output, so the build artifact itself carries the data out.
osv:UBUNTU-CVE-2026-10582
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": "b100523b1233207a4102738b371e151fe15f94ff7c0c6e6bb4bb72c2d1220830",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-10582",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-10582",
"summary": "Hugo's security.http.urls allowlist is the only control on outbound fetches made by resources.GetRemote, and it inspects the URL text alone. CheckAllowedHTTPURL in config/security/securityConfig.go applies the configured pattern list and then re-checks a canonicalised form of an integer, hex or octal IPv4 host, but it never resolves the hostname and never inspects the address the HTTP client actually connects to. The client constructed in resources/resource_factories/create/create.go installs no dial-time hook, so no check occurs at connection time either. A hostname that resolves to a loopback, private or cloud-metadata address therefore satisfies the policy, and the response body is embedded in the generated site. An attacker who can supply a URL through content, for example a front-matter field or a CMS field, can make the build fetch an internal endpoint and publish the response in the static output, so the build artifact itself carries the data out.",
"evidence": "osv:UBUNTU-CVE-2026-10582",
"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-2026-10582",
"aliases": [
"UBUNTU-CVE-2026-10582"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/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-2026-10582.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-2026-10582.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-2026-10582.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-2026-10582.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-2026-10582.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-2026-10582.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-2026-10582.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "hugo",
"binary_version": "0.154.5-1"
}
]
}
}
],
"modified": "2026-10-17T12:59:46.751772627Z",
"provider": "osv",
"upstream": [
"CVE-2026-10582"
],
"references": [
"https://ubuntu.com/security/CVE-2026-10582",
"https://www.cve.org/CVERecord?id=CVE-2026-10582"
]
},
"related_cves": [
{
"value": "CVE-2026-10582",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 359763,
"published_at": "2026-08-24T11:16:00+00:00"
}