High
Security advisory
A specially crafted HTML fragment can cause Sanitize gem for Ruby to allow non-whitelisted attributes to be used on a whitelisted HTML element.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-3740
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:30 UTC · Revision 1
Source evidence
A specially crafted HTML fragment can cause Sanitize gem for Ruby to allow non-whitelisted attributes to be used on a whitelisted HTML element.
osv:CVE-2018-3740
Complete source record
{
"id": "badb605c45452f05e40040d8fa636532a96b24997809260f384f7a2c16c4f44a",
"url": "https://osv.dev/vulnerability/CVE-2018-3740",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-3740",
"summary": "A specially crafted HTML fragment can cause Sanitize gem for Ruby to allow non-whitelisted attributes to be used on a whitelisted HTML element.",
"evidence": "osv:CVE-2018-3740",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-3740",
"aliases": [
"CVE-2018-3740",
"GHSA-7f42-p84j-f58p"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/rgrove/sanitize",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "1cbdff38bf84939a8981c05fe4ba0dd7eec0ed6e"
},
{
"fixed": "01629a162e448a83d901456d0ba8b65f3b03d46e"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:sanitize_project:sanitize:*:*:*:*:*:ruby:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "4.6.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "01629a162e448a83d901456d0ba8b65f3b03d46e"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v4.6.0",
"v4.5.0",
"v4.4.0",
"v4.3.0",
"v4.2.0",
"v4.1.0",
"v4.0.1",
"v4.0.0",
"v3.1.2",
"v3.1.1",
"v3.1.0",
"v3.0.2",
"v3.0.1",
"v3.0.0",
"v2.0.6",
"v2.0.5",
"v2.0.4",
"v2.0.3",
"release-2.0.2",
"release-2.0.1",
"release-2.0.0",
"release-1.2.1",
"release-1.2.0",
"release-1.1.0",
"release-1.0.4",
"release-1.0.3",
"release-1.0.2",
"release-1.0.1",
"release-1.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-3740.json"
}
}
],
"modified": "2026-10-20T10:50:27.807921225Z",
"provider": "osv",
"references": [
"https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released/",
"https://www.debian.org/security/2018/dsa-4358",
"https://github.com/rgrove/sanitize/issues/176",
"https://github.com/rgrove/sanitize/commit/01629a162e448a83d901456d0ba8b65f3b03d46e"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2018-3740",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 381733,
"published_at": "2018-03-30T19:29:00.27+00:00"
}