{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "c3edcc274c389816d434acadac07ee78eaf330c1"
            }
          ],
          "repo": "https://github.com/wwbn/avideo",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jggq-mm5m-r5wv"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89256.json"
  },
  "details": "AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the Bookmark plugin where chapter names are not encoded before being concatenated into public watch-page HTML. A video owner can inject malicious scripts via the bookmark name parameter, and every visitor of that video executes the payload in the AVideo origin.",
  "id": "CVE-2026-89256",
  "modified": "2026-10-08T02:31:06.906942372Z",
  "published": "2026-09-11T11:15:32.943Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89256.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-jggq-mm5m-r5wv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89256"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/avideo-bookmark-plugin-stored-xss-via-chapter-names"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "AVideo Bookmark Plugin Stored XSS via Chapter Names"
}