PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via style information

{
  "id": "cc17de5de7717f539580bdbc5e39411904330ab22428fb90c52ecd89df15d2d3",
  "url": "https://osv.dev/vulnerability/CVE-2024-45046",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "PhpSpreadsheet HTML writer is vulnerable to Cross-Site Scripting via style information",
    "summary": "PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In affected versions `\\PhpOffice\\PhpSpreadsheet\\Writer\\Html` doesn't sanitize spreadsheet styling information such as font names, allowing an attacker to inject arbitrary JavaScript on the page. As a result an attacker may used a crafted spreadsheet to fully takeover a session of a user viewing spreadsheet files as HTML. This issue has been addressed in release version 2.1.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.",
    "evidence": "osv:CVE-2024-45046",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-45046",
      "aliases": [
        "CVE-2024-45046",
        "GHSA-wgmf-q9vr-vww6"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/phpoffice/phpspreadsheet",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "59ee38f7480904cd6487e5cbdea4d80ff2758719"
                },
                {
                  "introduced": "4a77798f835119754961a97714f135826a323caa"
                },
                {
                  "fixed": "dbed77bd3a0f68f96c0dd68ad4499d5674fecc3e"
                },
                {
                  "fixed": "f7cf378faed2e11cf4825bf8bafea4922ae44667"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.29.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.1.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f7cf378faed2e11cf4825bf8bafea4922ae44667"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.29.0",
            "2.0.0",
            "1.28.0",
            "1.27.0",
            "1.25.2",
            "1.25.1",
            "1.25.0",
            "1.24.1",
            "1.24.0",
            "1.23.0",
            "1.22.0",
            "1.21.0",
            "1.20.0",
            "1.19.0",
            "1.18.0",
            "1.17.1",
            "1.17.0",
            "1.16.0",
            "1.15.0",
            "1.14.1",
            "1.14.0",
            "1.13.0",
            "1.12.0",
            "1.11.0",
            "1.10.1",
            "1.10.0",
            "1.8.2",
            "1.8.1",
            "1.8.0",
            "1.7.0",
            "1.6.0",
            "1.5.0",
            "1.4.1",
            "1.4.0",
            "1.3.1",
            "1.3.0",
            "1.2.1",
            "1.2.0",
            "1.1.0",
            "1.0.0",
            "1.0.0-beta2",
            "phpexcel-last-cherry-picked-commit",
            "phpexcel-last-release-1.8.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-45046.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.629272033Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45046.json",
        "https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-wgmf-q9vr-vww6",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-45046",
        "https://github.com/PHPOffice/PhpSpreadsheet/commit/f7cf378faed2e11cf4825bf8bafea4922ae44667",
        "https://github.com/PHPOffice/PhpSpreadsheet/pull/3957"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45046.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-45046",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517812,
  "published_at": "2024-08-28T20:41:23.628+00:00"
}