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CVE-2026-100316

CVE-2026-100316

validatedZero produced an exploit or a check.

GHSA-v4p8-57qj-v3xg ↗EUVD-2026-103277 ↗

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).kevAttacks confirmed in the real world.
davidanderson European VAT Compliance Assistant for WooCommerce <= 1.36.10
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
ETK-2026-2177Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss7.2cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
+3.2dTTV
<1mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0dcheck available+3.2dagent stopped
0
+1d
+2d
+3d

description

European VAT Compliance Assistant for WooCommerce through version 1.36.10 is affected by stored cross-site scripting. An unauthenticated attacker can cause browser-executed script to be stored and later run when a user views affected content, if guest checkout is enabled and the application accepts a supplied country header.

mitigation

Disable guest checkout or the affected plugin until an updated release is available. Configure the edge proxy or CDN to discard client-controlled CF-IPCountry headers before they reach WordPress.

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.
deterministic
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.
0.27%18th percentile
agent run time
<1m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-17 07:51Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Upstream: a detection for this already ships elsewhere, so we didn't generate a new one. The credit goes to whoever did.

source signals

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

  1. 2026-10-17 07:51Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-100316
  2. 2026-10-20 12:39Z

this entry in the feed

GET /api/v1/feed/CVE-2026-100316

{
  "etk_id": "ETK-2026-2177",
  "cve_id": "CVE-2026-100316",
  "display_id": "CVE-2026-100316",
  "ghsa_id": "GHSA-v4p8-57qj-v3xg",
  "euvd_id": "EUVD-2026-103277",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored XSS in European VAT Compliance Assistant for WooCommerce",
  "summary": "European VAT Compliance Assistant for WooCommerce through version 1.36.10 is affected by stored cross-site scripting. An unauthenticated attacker can cause browser-executed script to be stored and later run when a user views affected content, if guest checkout is enabled and the application accepts a supplied country header.",
  "mitigation": "Disable guest checkout or the affected plugin until an updated release is available. Configure the edge proxy or CDN to discard client-controlled CF-IPCountry headers before they reach WordPress.",
  "vendor": "davidanderson",
  "product": "European VAT Compliance Assistant for WooCommerce",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 1.36.10"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "European VAT Compliance Assistant for WooCommerce",
      "purl": null
    }
  ],
  "cwes": [
    79
  ],
  "cvss_score": 7.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
  "epss_score": 0.0027,
  "epss_percentile": 0.1836,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "upstream",
  "exploit": false,
  "pipeline_minutes": 0.010403133333333333,
  "t0_at": "2026-10-17T07:51:25.399000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-20T12:39:17.323948+00:00",
      "days": 3.19990653875,
      "is_lower_bound": false,
      "measured_at": "2026-10-17T07:51:25.399000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-17T07:51:25.399000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-17T07:51:25.399000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-100316"
    }
  }
}

published 2026-10-20 12:39Z
last change 2026-10-21 05:00Z

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