DOMPurify before 3.4.13 Cross-Site Scripting via IN_PLACE hook

{
  "id": "eab6de49a51a3afde136249ebc6c5ebcff0a5ab2ffa17af441c638dbb130a39a",
  "url": "https://osv.dev/vulnerability/CVE-2026-75838",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DOMPurify before 3.4.13 Cross-Site Scripting via IN_PLACE hook",
    "summary": "DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees. Attackers can supply HTML with event handlers on descendant elements that execute after sanitization completes, even though the returned root appears clean.",
    "evidence": "osv:CVE-2026-75838",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-75838",
      "aliases": [
        "CVE-2026-75838",
        "GHSA-55q2-fjhq-7xh7"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cure53/dompurify",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3067f774676975de12306effd6db6ad7a9a8c17f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.4.13"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.4.13"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.4.12",
            "3.4.11",
            "3.4.10",
            "3.4.9",
            "3.4.8",
            "3.4.7",
            "3.4.6",
            "3.4.5",
            "3.4.4",
            "3.4.3",
            "3.4.2",
            "3.4.1",
            "3.4.0",
            "3.3.3",
            "3.2.3",
            "3.1.3",
            "3.0.4",
            "2.4.3",
            "2.4.2",
            "2.4.1",
            "2.4.0",
            "2.3.12",
            "2.3.11",
            "2.3.10",
            "2.3.9",
            "2.3.8",
            "2.3.6",
            "2.3.5",
            "2.3.4",
            "2.3.3",
            "2.3.2",
            "2.3.1",
            "2.3.0",
            "2.2.9",
            "2.2.8",
            "2.2.7",
            "2.2.6",
            "2.2.4",
            "2.2.3",
            "2.2.2",
            "2.2.0",
            "2.1.1",
            "2.1.0",
            "2.0.17",
            "2.0.16",
            "2.0.15",
            "2.0.14",
            "2.0.13",
            "2.0.12",
            "2.0.11",
            "2.0.10",
            "2.0.9",
            "2.0.8",
            "2.0.6",
            "2.0.5",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.1",
            "2.0.0",
            "1.0.11",
            "1.0.10",
            "1.0.9",
            "1.0.8",
            "1.0.7",
            "1.0.6",
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "0.9.0",
            "0.8.9",
            "0.8.8",
            "0.8.7",
            "0.8.6",
            "0.8.5",
            "0.8.4",
            "0.8.3",
            "0.8.2",
            "0.8.1",
            "0.8.0",
            "0.7.3",
            "0.7.2",
            "0.7.1",
            "0.7.0",
            "0.6.7",
            "0.6.6",
            "0.6.5",
            "0.6.4",
            "0.6.3",
            "0.6.2",
            "0.6.1",
            "0.6.0",
            "0.4.5",
            "0.4.4",
            "0.4.3",
            "0.4.2",
            "0.4",
            "0.3",
            "v0.3",
            "0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75838.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:21.793515794Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75838.json",
        "https://github.com/cure53/DOMPurify/security/advisories/GHSA-55q2-fjhq-7xh7",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-75838",
        "https://www.vulncheck.com/advisories/dompurify-before-cross-site-scripting-via-in-place-hook"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75838.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-75838",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 487912,
  "published_at": "2026-08-18T11:19:47.885+00:00"
}