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CVE-2026-93766

CVE-2026-93766

validatedZero produced an exploit or a check.

GHSA-4jjw-8w4r-774r ↗EUVD-2026-119151 ↗

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.
Happyforms Pro <= 1.38.9
ETK-2026-3840Zero'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
+2h16mTTV
<1mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0hcheck available+2h16magent stopped
0
+1h
+2h

description

Happyforms Pro for WordPress versions through 1.38.9 are affected by stored cross-site scripting. An unauthenticated attacker may cause browser-executed content to be stored in a page, affecting users who later view that page. Exploitation requires the vulnerable plugin to be reachable and a user to load content containing the stored value.

mitigation

Update Happyforms Pro to a vendor-confirmed release later than 1.38.9 that addresses this issue. Until then, disable or restrict unauthenticated form submissions and block requests carrying the affected referer field where feasible.

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.
–
agent run time
<1m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-07 11:26Z
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. 2026-11-07 11:26Z
    ghsa: trigger signal, started the run
    https://github.com/advisories/GHSA-4jjw-8w4r-774r
  2. 2026-11-07 11:26Z
  3. 2026-11-07 13:42Z

this entry in the feed

GET /api/v1/feed/CVE-2026-93766

{
  "etk_id": "ETK-2026-3840",
  "cve_id": "CVE-2026-93766",
  "display_id": "CVE-2026-93766",
  "ghsa_id": "GHSA-4jjw-8w4r-774r",
  "euvd_id": "EUVD-2026-119151",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Happyforms Pro",
  "summary": "Happyforms Pro for WordPress versions through 1.38.9 are affected by stored cross-site scripting. An unauthenticated attacker may cause browser-executed content to be stored in a page, affecting users who later view that page. Exploitation requires the vulnerable plugin to be reachable and a user to load content containing the stored value.",
  "mitigation": "Update Happyforms Pro to a vendor-confirmed release later than 1.38.9 that addresses this issue. Until then, disable or restrict unauthenticated form submissions and block requests carrying the affected referer field where feasible.",
  "vendor": "Happyforms",
  "product": "Happyforms Pro",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 1.38.9"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Happyforms Pro",
      "purl": null
    }
  ],
  "cwes": null,
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "upstream",
  "exploit": false,
  "pipeline_minutes": 0.009076966666666667,
  "t0_at": "2026-11-07T11:26:30.560000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-07T13:42:35.090565+00:00",
      "days": 0.09449688153935185,
      "is_lower_bound": false,
      "measured_at": "2026-11-07T11:26:30.560000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-07T11:26:30.560000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-07T11:26:30.560000+00:00",
      "url": "https://github.com/advisories/GHSA-4jjw-8w4r-774r"
    }
  }
}

published 2026-11-07 13:42Z
last change 2026-11-08 00:40Z

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