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CVE-2026-89435

CVE-2026-89435

validatedZero produced an exploit or a check.

EUVD-2026-113736 ↗

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.
strategy11team Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder <= 6.35
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
ETK-2026-3050Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss8.8cna vendorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
+23mTTV
<1mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0mcheck available+23magent stopped
0
+5min
+10min
+15min
+20min
+25min

description

Formidable Forms for WordPress through version 6.35 may permit authenticated low-privilege users to add plugins to the site. Exposure requires a free-only installation without Formidable Pro and an attacker account with the applicable form-view permission.

mitigation

Until a fixed release is published, disable the affected plugin on exposed free-only sites or remove untrusted authenticated accounts and form-view permissions. Review recent plugin installations and restrict plugin-management access to trusted administrators.

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.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
<1m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-30 06:47Z
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. 2026-10-30 06:47Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-89435
  2. 2026-10-30 07:10Z

this entry in the feed

GET /api/v1/feed/CVE-2026-89435

{
  "etk_id": "ETK-2026-3050",
  "cve_id": "CVE-2026-89435",
  "display_id": "CVE-2026-89435",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-113736",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Arbitrary plugin installation in Formidable Forms",
  "summary": "Formidable Forms for WordPress through version 6.35 may permit authenticated low-privilege users to add plugins to the site. Exposure requires a free-only installation without Formidable Pro and an attacker account with the applicable form-view permission.",
  "mitigation": "Until a fixed release is published, disable the affected plugin on exposed free-only sites or remove untrusted authenticated accounts and form-view permissions. Review recent plugin installations and restrict plugin-management access to trusted administrators.",
  "vendor": "strategy11team",
  "product": "Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 6.35"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder",
      "purl": null
    }
  ],
  "cwes": [
    74
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "upstream",
  "exploit": false,
  "pipeline_minutes": 0.2658883166666667,
  "t0_at": "2026-10-30T06:47:31.045000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-30T07:10:40.162034+00:00",
      "days": 0.016077743449074075,
      "is_lower_bound": false,
      "measured_at": "2026-10-30T06:47:31.045000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-30T06:47:31.045000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-30T06:47:31.045000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-89435"
    }
  }
}

published 2026-10-30 07:10Z
last change 2026-10-30 08:24Z

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