Security advisory

{
  "id": "90ff0c0d6820471d5c48c67b264296e0eb6aef7587f8950d2a64e0ce0eb1697d",
  "url": "https://osv.dev/vulnerability/CVE-2021-39349",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-39349",
    "summary": "The Author Bio Box WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/includes/admin/class-author-bio-box-admin.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 3.3.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.",
    "evidence": "osv:CVE-2021-39349",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-39349",
      "aliases": [
        "CVE-2021-39349"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/claudiosanches/author-bio-box",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "f125e36a2e370d591954d17714401b3133448595"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:author_bio_box_project:author_bio_box:*:*:*:*:*:wordpress:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.3.1",
            "3.3.0",
            "3.2.1",
            "3.2.0",
            "3.1.1",
            "3.1.0",
            "3.0.0",
            "2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39349.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:39.794514115Z",
      "provider": "osv",
      "references": [
        "https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39349",
        "https://plugins.trac.wordpress.org/changeset/2613798/author-bio-box/tags/3.3.2/includes/admin/class-author-bio-box-admin.php",
        "https://github.com/BigTiger2020/word-press/blob/main/Author%20Bio%20Box.md"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-39349",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434740,
  "published_at": "2021-10-15T13:15:08.07+00:00"
}