LowFix available
ruby-nokogiri — security advisory
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema (see CVE-2020-26247), was not correctly enforced on the JRuby implementation. As a result, a schema parsed with default options could still cause external resources to be fetched over the network, potentially enabling SSRF or XXE attacks. This vulnerability is fixed in 1.19.4.
- Products
- ruby-nokogiri
- Affected versions
- 1.13.10+dfsg-2, 1.14.2+dfsg-1, 1.14.3+dfsg-1, 1.14.3+dfsg-2, 1.15.4+dfsg-1, 1.16.0+dfsg-1, 1.16.0+dfsg-2, 1.16.2+dfsg-1, 1.16.4+dfsg-1, 1.17.2+dfsg-1~exp1, 1.18.10+dfsg-1, 1.18.10+dfsg-2, 1.18.10+dfsg-3, 1.18.2+dfsg-1, 1.19.1+dfsg-1, 1.19.3+dfsg-1, 1.19.4+dfsg-1
- Fixed versions
- 1.19.4+dfsg-1
- CVEs
- CVE-2026-57234
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:18 UTC · Revision 2
Source evidence
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema (see CVE-2020-26247), was not correctly enforced on the JRuby implementation. As a result, a schema parsed with default options could still cause external resources to be fetched over the network, potentially enabling SSRF or XXE attacks. This vulnerability is fixed in 1.19.4.
osv:DEBIAN-CVE-2026-57234
ruby-nokogiri
Fixed versions: Not specified
ruby-nokogiri
Fixed versions: Not specified
ruby-nokogiri
Fixed versions: 1.19.4+dfsg-1
Complete source record
{
"id": "1d74f51fa1753a585fef86138011d86299a6b7b4b23d8359fd1033fc0773470e",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-57234",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-57234",
"summary": "Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, the NONET parse option, which Nokogiri turns on by default for Nokogiri::XML::Schema (see CVE-2020-26247), was not correctly enforced on the JRuby implementation. As a result, a schema parsed with default options could still cause external resources to be fetched over the network, potentially enabling SSRF or XXE attacks. This vulnerability is fixed in 1.19.4.",
"evidence": "osv:DEBIAN-CVE-2026-57234",
"products": [
{
"name": {
"value": "ruby-nokogiri",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.13.10+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.14.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.14.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.14.3+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.15.4+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.16.0+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.16.0+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.16.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.16.4+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.17.2+dfsg-1~exp1",
"evidence": "/affected/0/versions"
},
{
"value": "1.18.10+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.18.10+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.18.10+dfsg-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.18.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.19.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.19.3+dfsg-1",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.18.10+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.18.10+dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.18.10+dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.18.2+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.19.1+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.19.3+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.19.4+dfsg-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "ruby-nokogiri",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.19.4+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.18.10+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.18.10+dfsg-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.18.10+dfsg-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.18.2+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.19.1+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.19.3+dfsg-1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "DEBIAN-CVE-2026-57234",
"aliases": [
"DEBIAN-CVE-2026-57234"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ruby-nokogiri",
"purl": "pkg:deb/debian/ruby-nokogiri?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.13.10+dfsg-2",
"1.14.2+dfsg-1",
"1.14.3+dfsg-1",
"1.14.3+dfsg-2",
"1.15.4+dfsg-1",
"1.16.0+dfsg-1",
"1.16.0+dfsg-2",
"1.16.2+dfsg-1",
"1.16.4+dfsg-1",
"1.17.2+dfsg-1~exp1",
"1.18.10+dfsg-1",
"1.18.10+dfsg-2",
"1.18.10+dfsg-3",
"1.18.2+dfsg-1",
"1.19.1+dfsg-1",
"1.19.3+dfsg-1",
"1.19.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57234.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ruby-nokogiri",
"purl": "pkg:deb/debian/ruby-nokogiri?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.18.10+dfsg-1",
"1.18.10+dfsg-2",
"1.18.10+dfsg-3",
"1.18.2+dfsg-1",
"1.19.1+dfsg-1",
"1.19.3+dfsg-1",
"1.19.4+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57234.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.4+dfsg-1"
}
]
}
],
"package": {
"name": "ruby-nokogiri",
"purl": "pkg:deb/debian/ruby-nokogiri?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.18.10+dfsg-1",
"1.18.10+dfsg-2",
"1.18.10+dfsg-3",
"1.18.2+dfsg-1",
"1.19.1+dfsg-1",
"1.19.3+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-57234.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-26T11:47:29.131208819Z",
"provider": "osv",
"upstream": [
"CVE-2026-57234"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-57234"
]
},
"related_cves": [
{
"value": "CVE-2026-57234",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450809,
"published_at": "2026-06-25T15:16:40.343+00:00"
}