CVE-2026-118377

{
  "etk_id": "ETK-2026-2824",
  "cve_id": "CVE-2026-118377",
  "display_id": "CVE-2026-118377",
  "ghsa_id": "GHSA-qfwr-rmpq-mvmx",
  "euvd_id": "EUVD-2026-111553",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Missing callback integrity validation in mewebstudio pos",
  "summary": "mewebstudio pos through 2.0.0 does not properly validate payment-result callbacks in affected payment handlers. An unauthenticated attacker may alter callback data to make an order appear paid, provided the affected callback endpoint is reachable.",
  "mitigation": "Ensure affected payment handlers validate the payment provider's required callback integrity value before accepting payment status, amount, or order data. Restrict callback endpoints to trusted payment-provider traffic and independently verify payment status until an updated release is available.",
  "vendor": "mewebstudio",
  "product": "pos",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 2.0.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "pos",
      "purl": null
    }
  ],
  "cwes": [
    345
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 14.8518195,
  "t0_at": "2026-10-28T02:03:24.283000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-28T02:03:24.283000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T02:03:24.283000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-118377"
    }
  }
}