CVE-2026-104816

{
  "etk_id": "ETK-2026-1495",
  "cve_id": "CVE-2026-104816",
  "display_id": "CVE-2026-104816",
  "ghsa_id": "GHSA-p73x-6qrq-34jc",
  "euvd_id": "EUVD-2026-99238",
  "status": "published",
  "anchor_state": "anchored",
  "title": "RSS link cross-site scripting in Misskey",
  "summary": "Misskey RSS widgets in versions 12.0.0 through versions before 2026.7.0 do not adequately restrict link URL schemes. An attacker who can control a configured feed may cause script execution in a user's browser when that user opens a malicious feed-item link.",
  "mitigation": "Upgrade Misskey to version 2026.7.0 or later. Until upgrading, remove or avoid RSS feeds that are not fully trusted.",
  "vendor": "misskey-dev",
  "product": "misskey",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.0.0"
      ],
      "ecosystem": "n/a",
      "fixed_versions": [
        "2026.7.0"
      ],
      "package_name": "Misskey",
      "purl": null
    }
  ],
  "cwes": [
    79
  ],
  "cvss_score": 8.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N",
  "epss_score": 0.0063,
  "epss_percentile": 0.4928,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 23.708858383333332,
  "t0_at": "2026-10-13T18:38:06.905000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-13T18:38:06.905000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T18:38:06.905000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-104816"
    }
  }
}