CVE-2026-18143

validatedZero produced an exploit or a check.

GHSA-f78j-xwc8-gq3q ↗EUVD-2026-87542 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).+1h20mkevAttacks confirmed in the real world.+2d
addify Request a Quote for WooCommerce <= 2.9.2
CWE-434 Unrestricted Upload of File with Dangerous Type
ETK-2026-491, permanent identifier
+7.6dTTV
37mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
cve.org publication−1.7dpublic poctrigger signal +0dkev+1.0dcheck available+5.8dagent stopped
0
+2d
+4d

description

Request a Quote for WooCommerce for WordPress through version 2.9.2 permits insufficiently validated file uploads through its popup quote workflow. An unauthenticated attacker may place executable content in a web-accessible upload location when a public quote rule with the multi-page popup flow is enabled.

mitigation

Disable public quote rules that use the multi-page popup flow and restrict web access to the plugin's temporary upload location. No fixed version is recorded; monitor for an updated release and apply it promptly.

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
1.7%77th percentile
agent run time
37m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-09-26 06:39Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
+1h20m
Δ to kevAttacks confirmed in the real world.
+2d

outcome

Contextual check: a technique exists and was validated, but no deterministic check could cover this one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-09-26 06:39Z
  2. 2026-09-28
    vulncheck_kev: trigger signal, started the run
  3. 2026-09-28 00:00Z
  4. 2026-10-04 03:49Z

this entry in the feed

GET /api/v1/feed/CVE-2026-18143

{
  "etk_id": "ETK-2026-491",
  "cve_id": "CVE-2026-18143",
  "display_id": "CVE-2026-18143",
  "ghsa_id": "GHSA-f78j-xwc8-gq3q",
  "euvd_id": "EUVD-2026-87542",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated unrestricted file upload in Request a Quote for WooCommerce",
  "summary": "Request a Quote for WooCommerce for WordPress through version 2.9.2 permits insufficiently validated file uploads through its popup quote workflow. An unauthenticated attacker may place executable content in a web-accessible upload location when a public quote rule with the multi-page popup flow is enabled.",
  "mitigation": "Disable public quote rules that use the multi-page popup flow and restrict web access to the plugin's temporary upload location. No fixed version is recorded; monitor for an updated release and apply it promptly.",
  "vendor": "addify",
  "product": "Request a Quote for WooCommerce",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 2.9.2"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Request a Quote for WooCommerce",
      "purl": null
    }
  ],
  "cwes": [
    434
  ],
  "cvss_score": 9.8,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0171,
  "epss_percentile": 0.7701,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 37.0710225,
  "t0_at": "2026-09-26T06:39:44.226000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-03T19:54:45.936008+00:00",
      "days": 7.552103125092593,
      "is_lower_bound": false,
      "measured_at": "2026-09-26T06:39:44.226000+00:00",
      "url": null
    },
    "kev": {
      "at": "2026-09-28T00:00:00+00:00",
      "days": 2,
      "is_lower_bound": false,
      "measured_at": "2026-09-26T06:39:44.226000+00:00",
      "precision": "day",
      "url": "https://vulncheck.com/cve/CVE-2026-18143"
    },
    "public_poc": {
      "at": "2026-09-26T08:00:13+00:00",
      "days": 0.05588858796296296,
      "is_lower_bound": false,
      "measured_at": "2026-09-26T06:39:44.226000+00:00",
      "url": "https://github.com/murrez/CVE-2026-18143"
    },
    "trigger_signal": {
      "at": "2026-09-28T00:00:00+00:00",
      "days": 1.7224047916666667,
      "is_lower_bound": false,
      "measured_at": "2026-09-26T06:39:44.226000+00:00",
      "url": "https://vulncheck.com/cve/CVE-2026-18143"
    }
  }
}

published 2026-10-03 19:29Z
last change 2026-10-21 08:40Z

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