CVE-2026-109937

{
  "etk_id": "ETK-2026-1957",
  "cve_id": "CVE-2026-109937",
  "display_id": "CVE-2026-109937",
  "ghsa_id": "GHSA-m5fx-f9px-4463",
  "euvd_id": "EUVD-2026-103390",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Open redirect in Otter Blocks Stripe Checkout returns",
  "summary": "Otter Blocks versions earlier than 3.2.3 can use an unvalidated return URL when creating Stripe Checkout sessions. An unauthenticated attacker may cause a customer who completes or cancels checkout to be sent to an external site; this requires the victim to follow a checkout flow using the attacker-influenced return destination.",
  "mitigation": "Update Otter Blocks to version 3.2.3 or later. Until updated, limit exposure of Stripe Checkout flows and ensure return destinations are restricted to site-controlled URLs.",
  "vendor": null,
  "product": "Otter Blocks",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 3.2.3"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.2.3"
      ],
      "package_name": "Otter Blocks",
      "purl": null
    }
  ],
  "cwes": [
    601
  ],
  "cvss_score": 5.4,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
  "epss_score": 0.0015,
  "epss_percentile": 0.0343,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 174.07320051666667,
  "t0_at": "2026-10-18T06:00:14.838000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-18T06:00:14.838000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-18T06:00:14.838000+00:00",
      "url": "https://github.com/advisories/GHSA-m5fx-f9px-4463"
    }
  }
}