CVE-2026-84740

{
  "etk_id": "ETK-2026-2492",
  "cve_id": "CVE-2026-84740",
  "display_id": "CVE-2026-84740",
  "ghsa_id": "GHSA-4c37-j68q-cmxj",
  "euvd_id": "EUVD-2026-91210",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated shortcode injection in The Events Calendar",
  "summary": "The Events Calendar versions before 6.17.5.1 are affected by inadequate input handling in an unauthenticated AJAX action. A remote unauthenticated attacker can cause execution of shortcodes registered on the affected WordPress site. Exploitation requires the vulnerable plugin version and reachable unauthenticated AJAX functionality.",
  "mitigation": "Update The Events Calendar to version 6.17.5.1 or later. Restrict public access to the affected WordPress site until the update is installed if immediate patching is not possible.",
  "vendor": "StellarWP",
  "product": "The Events Calendar",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.12.0, < 6.17.5.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "6.17.5.1"
      ],
      "package_name": "The Events Calendar",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 6.5,
  "cvss_src": "other",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "upstream",
  "exploit": false,
  "pipeline_minutes": 0.0186631,
  "t0_at": "2026-10-02T06:56:50.295000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T20:22:30.934613+00:00",
      "days": 20.559498143668982,
      "is_lower_bound": false,
      "measured_at": "2026-10-02T06:56:50.295000+00:00",
      "url": null
    },
    "kev": {
      "at": "2026-10-22T00:00:00+00:00",
      "days": 20,
      "is_lower_bound": false,
      "measured_at": "2026-10-02T06:56:50.295000+00:00",
      "precision": "day",
      "url": "https://vulncheck.com/cve/CVE-2026-84740"
    },
    "public_poc": {
      "at": "2026-10-02T06:56:50.295000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-02T06:56:50.295000+00:00",
      "url": "https://wpscan.com/vulnerability/3381a51e-beaa-4420-a33b-6a68612a2e8a/"
    },
    "trigger_signal": {
      "at": "2026-10-22T00:00:00+00:00",
      "days": 19.710528993055554,
      "is_lower_bound": false,
      "measured_at": "2026-10-02T06:56:50.295000+00:00",
      "url": "https://vulncheck.com/cve/CVE-2026-84740"
    }
  }
}