CVE-2026-103651

{
  "etk_id": "ETK-2026-465",
  "cve_id": "CVE-2026-103651",
  "display_id": "CVE-2026-103651",
  "ghsa_id": "GHSA-28mq-63wc-4252",
  "euvd_id": "EUVD-2026-90542",
  "status": "published",
  "anchor_state": "anchored",
  "title": "HOTP token replay in MISP authentication",
  "summary": "MISP versions before 2.5.48 may accept a previously used HOTP value again during second-factor authentication. An attacker could access the affected account and disrupt its HOTP sequence if HOTP is enabled, they hold a password-authenticated pending session, and they know an HOTP value.",
  "mitigation": "Upgrade MISP to version 2.5.48 or later. Until upgraded, disable HOTP second-factor authentication for exposed accounts and invalidate outstanding authentication sessions where practical.",
  "vendor": "MISP",
  "product": "MISP",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 2.5.48"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2.5.48"
      ],
      "package_name": "MISP",
      "purl": null
    }
  ],
  "cwes": [
    362
  ],
  "cvss_score": 7.6,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
  "epss_score": 0.002,
  "epss_percentile": 0.087,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 69.57870721666667,
  "t0_at": "2026-10-01T07:34:02.597000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-01T07:34:02.597000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T07:34:02.597000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103651"
    }
  }
}