DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML

{
  "id": "02f812daea6544c2ae4733ab10254634694eaadb07441c1703cd048559475b03",
  "url": "https://osv.dev/vulnerability/CVE-2026-0540",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML",
    "summary": "DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.",
    "evidence": "osv:CVE-2026-0540",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-0540",
      "aliases": [
        "CVE-2026-0540",
        "GHSA-v2wj-7wpq-c8vv"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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": "e1ddfc7b5e6d6599c369f826699b0204e2c691b9"
                },
                {
                  "last_affected": "ee992fc4880215757c9c09e9638bb95e1dc24533"
                },
                {
                  "introduced": "3fe78d7501103832166613bb1452985dd4674008"
                },
                {
                  "fixed": "302b51de22535cc90235472c52e3401bedd46f80"
                },
                {
                  "fixed": "5e56114cb24079ce52dbc51f76e494b77afa5153"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.5.3"
                      },
                      {
                        "last_affected": "2.5.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.1.3"
                      },
                      {
                        "last_affected": "3.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "302b51de22535cc90235472c52e3401bedd46f80"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5e56114cb24079ce52dbc51f76e494b77afa5153"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "3.3.2"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.5.8",
            "3.2.3",
            "2.5.7",
            "2.5.6",
            "2.5.5",
            "2.5.4",
            "2.5.3",
            "3.1.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0540.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.500568705Z",
      "provider": "osv",
      "references": [
        "https://fluidattacks.com/advisories/daft",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0540.json",
        "https://github.com/cure53/DOMPurify/releases/tag/3.3.2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-0540",
        "https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml",
        "https://github.com/cure53/DOMPurify/commit/302b51de22535cc90235472c52e3401bedd46f80",
        "https://github.com/cure53/DOMPurify"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0540.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-0540",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491848,
  "published_at": "2026-03-03T17:26:06.621+00:00"
}