CVE-2026-91107

{
  "etk_id": "ETK-2026-704",
  "cve_id": "CVE-2026-91107",
  "display_id": "CVE-2026-91107",
  "ghsa_id": "GHSA-r588-8qfc-26mv",
  "euvd_id": "EUVD-2026-92806",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Improper authorization in openSIS Classic password resets",
  "summary": "openSIS Classic 9.3 is affected by an authorization flaw in its School Information update functionality. An authenticated user assigned the built-in teacher role may reset the password of another staff account. Exploitation requires access to a teacher-role account.",
  "mitigation": "Restrict or suspend teacher-role access to the affected School Information update function until a vendor update is available. Review teacher accounts and investigate unexpected staff password resets.",
  "vendor": "os4ed",
  "product": "openSIS-Classic",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "9.3"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "openSIS-Classic",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "epss_score": 0.0024,
  "epss_percentile": 0.1392,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 8.122554016666667,
  "t0_at": "2026-10-05T21:29:29.268000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-05T21:29:29.268000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-05T21:29:29.268000+00:00",
      "url": "https://github.com/advisories/GHSA-r588-8qfc-26mv"
    }
  }
}