MediumFix available
node-dompurify — security advisory
DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.
- Products
- node-dompurify
- Affected versions
- 2.4.1+dfsg+~2.4.0-1, 2.4.1+dfsg+~2.4.0-2, 2.4.1+dfsg+~2.4.0-2+deb12u1, 3.0.9+dfsg+~3.0.5-1, 3.1.6+dfsg+~3.0.5-1, 3.1.7+dfsg+~3.0.5-1, 3.1.7+dfsg+~3.0.5-2, 3.2.5+dfsg-1, 3.3.2+dfsg-1, 3.3.3+dfsg-1, 3.3.3+dfsg-2, 3.4.1+dfsg-1, 3.4.12+dfsg-1, 3.4.13+dfsg-1, 3.4.13+dfsg-2, 3.4.16+dfsg-1, 3.4.2+dfsg-1, 3.4.5+dfsg-1
- Fixed versions
- 3.4.1+dfsg-1
- CVEs
- CVE-2026-65903
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:53 UTC · Revision 2
Source evidence
DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.
osv:DEBIAN-CVE-2026-65903
node-dompurify
Fixed versions: Not specified
node-dompurify
Fixed versions: Not specified
node-dompurify
Fixed versions: 3.4.1+dfsg-1
Complete source record
{
"id": "a09ac2ea9162d488b41b64ac2a2f7c123507382800fd084bebbdb362280aec02",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-65903",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-65903",
"summary": "DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.",
"evidence": "osv:DEBIAN-CVE-2026-65903",
"products": [
{
"name": {
"value": "node-dompurify",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.4.1+dfsg+~2.4.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.4.1+dfsg+~2.4.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.4.1+dfsg+~2.4.0-2+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "3.0.9+dfsg+~3.0.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.1.6+dfsg+~3.0.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.1.7+dfsg+~3.0.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.1.7+dfsg+~3.0.5-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.2.5+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.3.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.3.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.3.3+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.12+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.13+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.13+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.16+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "3.4.5+dfsg-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "node-dompurify",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.1.7+dfsg+~3.0.5-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.2.5+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.3.2+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.3.3+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.3.3+dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.1+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.12+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.13+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.13+dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.16+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.2+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.4.5+dfsg-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "node-dompurify",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4.1+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "3.1.7+dfsg+~3.0.5-2",
"evidence": "/affected/2/versions"
},
{
"value": "3.2.5+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.3.2+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.3.3+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.3.3+dfsg-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-65903",
"aliases": [
"DEBIAN-CVE-2026-65903"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-dompurify",
"purl": "pkg:deb/debian/node-dompurify?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"2.4.1+dfsg+~2.4.0-1",
"2.4.1+dfsg+~2.4.0-2",
"2.4.1+dfsg+~2.4.0-2+deb12u1",
"3.0.9+dfsg+~3.0.5-1",
"3.1.6+dfsg+~3.0.5-1",
"3.1.7+dfsg+~3.0.5-1",
"3.1.7+dfsg+~3.0.5-2",
"3.2.5+dfsg-1",
"3.3.2+dfsg-1",
"3.3.3+dfsg-1",
"3.3.3+dfsg-2",
"3.4.1+dfsg-1",
"3.4.12+dfsg-1",
"3.4.13+dfsg-1",
"3.4.13+dfsg-2",
"3.4.16+dfsg-1",
"3.4.2+dfsg-1",
"3.4.5+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65903.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-dompurify",
"purl": "pkg:deb/debian/node-dompurify?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.1.7+dfsg+~3.0.5-2",
"3.2.5+dfsg-1",
"3.3.2+dfsg-1",
"3.3.3+dfsg-1",
"3.3.3+dfsg-2",
"3.4.1+dfsg-1",
"3.4.12+dfsg-1",
"3.4.13+dfsg-1",
"3.4.13+dfsg-2",
"3.4.16+dfsg-1",
"3.4.2+dfsg-1",
"3.4.5+dfsg-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65903.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.1+dfsg-1"
}
]
}
],
"package": {
"name": "node-dompurify",
"purl": "pkg:deb/debian/node-dompurify?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.1.7+dfsg+~3.0.5-2",
"3.2.5+dfsg-1",
"3.3.2+dfsg-1",
"3.3.3+dfsg-1",
"3.3.3+dfsg-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65903.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-25T09:47:34.644009268Z",
"provider": "osv",
"upstream": [
"CVE-2026-65903"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-65903"
]
},
"related_cves": [
{
"value": "CVE-2026-65903",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445207,
"published_at": "2026-07-23T14:18:05.903+00:00"
}