XSS vulnerability when rendering filename in Webform Multiform

{
  "id": "afaa07e2660df261e4df2a40fa4488520a2345928180aa3ed9cf8654fc417328",
  "url": "https://osv.dev/vulnerability/CVE-2025-12848",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "XSS vulnerability when rendering filename in Webform Multiform",
    "summary": "Webform Multiple File Upload module for Drupal 7.x contains a cross-site scripting (XSS) vulnerability in the file name renderer. An unauthenticated attacker can exploit this vulnerability by uploading a file with a malicious filename containing JavaScript code (e.g., \"\") to a Webform node with a Multifile field where file type validation is disabled. This allows the execution of arbitrary scripts in the context of the victim's browser. The issue is present in a third-party library and has been addressed in a patch available at https://github.com/fyneworks/multifile/pull/44 . Users are advised to apply the provided patch or update to a fixed version of the module.",
    "evidence": "osv:CVE-2025-12848",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-12848",
      "aliases": [
        "CVE-2025-12848"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/S:N/R:U/V:D/RE:L/U:Amber"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.drupalcode.org/project/webform_multifile",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "1c2fe6430e9f22f61b0f1e574ab4e1ff26386d82"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "7.x-1.0"
                      },
                      {
                        "last_affected": "7.x-1.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "7.x-1.6",
            "7.x-1.5",
            "7.x-1.4",
            "7.x-1.3",
            "7.x-1.2",
            "6.x-1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-12848.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.511881291Z",
      "provider": "osv",
      "references": [
        "https://git.drupalcode.org/project/webform_multifile",
        "https://www.drupal.org/project/webform_multifile",
        "https://d7es.tag1.com/security-advisories/webform-multiple-file-upload-critical-cross-site-scripting",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12848.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-12848",
        "https://www.d7security.org/security-advisories/D7SECURITY-SA-CONTRIB-2025-001/",
        "https://www.herodevs.com/vulnerability-directory/cve-2025-12848",
        "https://www.drupal.org/node/3105204"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "drupal",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/12xxx/CVE-2025-12848.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-12848",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488625,
  "published_at": "2025-11-26T01:28:33.628+00:00"
}