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CVE-2026-93755

CVE-2026-93755

validatedZero produced an exploit or a check.

GHSA-4vjj-g4g8-7pwg ↗EUVD-2026-119136 ↗

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-2026-3838Zero'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 for WordPress versions through 1.38.9 can retain untrusted client-IP header content and display it unsafely in the submission administration view. An unauthenticated attacker may cause script to run in an administrator's browser when that administrator reviews a submitted form entry; this requires a reachable form and an administrator to open the entry.

mitigation

Disable or restrict public Happyforms submissions until a vendor update that corrects this issue has been verified and deployed. Limit access to the WordPress administration interface and avoid opening untrusted submissions.

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-4vjj-g4g8-7pwg
  2. 2026-11-07 11:26Z
  3. 2026-11-07 13:42Z

this entry in the feed

GET /api/v1/feed/CVE-2026-93755

{
  "etk_id": "ETK-2026-3838",
  "cve_id": "CVE-2026-93755",
  "display_id": "CVE-2026-93755",
  "ghsa_id": "GHSA-4vjj-g4g8-7pwg",
  "euvd_id": "EUVD-2026-119136",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Happyforms for WordPress",
  "summary": "Happyforms for WordPress versions through 1.38.9 can retain untrusted client-IP header content and display it unsafely in the submission administration view. An unauthenticated attacker may cause script to run in an administrator's browser when that administrator reviews a submitted form entry; this requires a reachable form and an administrator to open the entry.",
  "mitigation": "Disable or restrict public Happyforms submissions until a vendor update that corrects this issue has been verified and deployed. Limit access to the WordPress administration interface and avoid opening untrusted submissions.",
  "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": 0.009159383333333333,
  "t0_at": "2026-11-07T11:26:25.087000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-07T13:42:34.156885+00:00",
      "days": 0.09454941996527778,
      "is_lower_bound": false,
      "measured_at": "2026-11-07T11:26:25.087000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-07T11:26:25.087000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-07T11:26:25.087000+00:00",
      "url": "https://github.com/advisories/GHSA-4vjj-g4g8-7pwg"
    }
  }
}

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

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