UnratedFix available

DEBIAN-CVE-2026-66010

Type: advisorySource: OSV1 source record

DOMPurify before 3.4.12 fails to execute afterSanitizeElements hook for custom elements allowed via CUSTOM_ELEMENT_HANDLING.tagNameCheck, allowing attributes to bypass application security policies. Attackers can preserve sensitive attributes on custom elements that later re-inject them into innerHTML sinks, creating second-order XSS gadgets.

Announced 24 Jul 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-66010

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-66010

node-dompurify

Source reference: /affected/0/package/name

Affected versions: 2.4.1+dfsg+~2.4.0-1
Source reference: /affected/0/versions
2.4.1+dfsg+~2.4.0-2
Source reference: /affected/0/versions
2.4.1+dfsg+~2.4.0-2+deb12u1
Source reference: /affected/0/versions
3.0.9+dfsg+~3.0.5-1
Source reference: /affected/0/versions
3.1.6+dfsg+~3.0.5-1
Source reference: /affected/0/versions
3.1.7+dfsg+~3.0.5-1
Source reference: /affected/0/versions
3.1.7+dfsg+~3.0.5-2
Source reference: /affected/0/versions
3.2.5+dfsg-1
Source reference: /affected/0/versions
3.3.2+dfsg-1
Source reference: /affected/0/versions
3.3.3+dfsg-1
Source reference: /affected/0/versions
3.3.3+dfsg-2
Source reference: /affected/0/versions
3.4.1+dfsg-1
Source reference: /affected/0/versions
3.4.12+dfsg-1
Source reference: /affected/0/versions
3.4.13+dfsg-1
Source reference: /affected/0/versions
3.4.13+dfsg-2
Source reference: /affected/0/versions
3.4.16+dfsg-1
Source reference: /affected/0/versions
3.4.2+dfsg-1
Source reference: /affected/0/versions
3.4.5+dfsg-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-dompurify

Source reference: /affected/1/package/name

Affected versions: 3.1.7+dfsg+~3.0.5-2
Source reference: /affected/1/versions
3.2.5+dfsg-1
Source reference: /affected/1/versions
3.3.2+dfsg-1
Source reference: /affected/1/versions
3.3.3+dfsg-1
Source reference: /affected/1/versions
3.3.3+dfsg-2
Source reference: /affected/1/versions
3.4.1+dfsg-1
Source reference: /affected/1/versions
3.4.12+dfsg-1
Source reference: /affected/1/versions
3.4.13+dfsg-1
Source reference: /affected/1/versions
3.4.13+dfsg-2
Source reference: /affected/1/versions
3.4.16+dfsg-1
Source reference: /affected/1/versions
3.4.2+dfsg-1
Source reference: /affected/1/versions
3.4.5+dfsg-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

node-dompurify

Source reference: /affected/2/package/name

Affected versions: 3.1.7+dfsg+~3.0.5-2
Source reference: /affected/2/versions
3.2.5+dfsg-1
Source reference: /affected/2/versions
3.3.2+dfsg-1
Source reference: /affected/2/versions
3.3.3+dfsg-1
Source reference: /affected/2/versions
3.3.3+dfsg-2
Source reference: /affected/2/versions
3.4.1+dfsg-1
Source reference: /affected/2/versions
3.4.2+dfsg-1
Source reference: /affected/2/versions
3.4.5+dfsg-1
Source reference: /affected/2/versions
Fixed versions: 3.4.12+dfsg-1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "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-2026-66010.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-2026-66010.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.4.12+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",
      "3.4.1+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-2026-66010.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58276 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 17:50:40 GMT
Publisher date: Fri, 24 Jul 2026 13:18:28 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-66010 · Revision 1Source updated