CVE-2026-105857

waiting for further signalsZero needs more public information before it can validate it.

GHSA-r488-j9vj-wx3q ↗EUVD-2026-93501 ↗

no check availablenot proven exploitable
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.
payloadcms payload < 3.90.0; >= 4.0.0-canary.0, < 4.0.0-canary.34
fixed in 3.90.0, 4.0.0-canary.34
CWE-94 Improper Control of Generation of Code ('Code Injection')
ETK-2026-788, permanent identifier
pkg:npm/@payloadcms/plugin-form-builder
13d 12h 19msince last run
44mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
trigger signal (cve.org) +0hwaiting for further signals+33h38m
0
+2h
+4h
+6h
+8h
+10h

description

@payloadcms/plugin-form-builder versions before 3.90.0, including canary releases before 4.0.0-canary.34, are affected. An attacker able to submit a crafted form may cause code to run on the server.

mitigation

Upgrade Payload packages to 3.90.0 or later, or to 4.0.0-canary.34 or later for the canary line. Review and restrict public form submission access until upgrades are complete.

fixed in 3.90.0, 4.0.0-canary.34

check
no
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.
0.43%36th percentile
agent run time
44m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-06 16:26Z
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

Contextual: an exploit technique exists, 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. 2026-10-06 16:26Z
    cve_org: trigger signal, started the run

this entry in the feed

GET /api/v1/feed/CVE-2026-105857

{
  "etk_id": "ETK-2026-788",
  "cve_id": "CVE-2026-105857",
  "display_id": "CVE-2026-105857",
  "ghsa_id": "GHSA-r488-j9vj-wx3q",
  "euvd_id": "EUVD-2026-93501",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Form-submission remote code execution in @payloadcms/plugin-form-builder",
  "summary": "@payloadcms/plugin-form-builder versions before 3.90.0, including canary releases before 4.0.0-canary.34, are affected. An attacker able to submit a crafted form may cause code to run on the server.",
  "mitigation": "Upgrade Payload packages to 3.90.0 or later, or to 4.0.0-canary.34 or later for the canary line. Review and restrict public form submission access until upgrades are complete.",
  "vendor": "payloadcms",
  "product": "payload",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 3.90.0"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "3.90.0"
      ],
      "package_name": "@payloadcms/plugin-form-builder",
      "purl": "pkg:npm/@payloadcms/plugin-form-builder"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0.0-canary.0, < 4.0.0-canary.34"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "4.0.0-canary.34"
      ],
      "package_name": "@payloadcms/plugin-form-builder",
      "purl": "pkg:npm/@payloadcms/plugin-form-builder"
    }
  ],
  "cwes": [
    94
  ],
  "cvss_score": 10,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
  "epss_score": 0.0043,
  "epss_percentile": 0.3638,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 44.48355146666667,
  "t0_at": "2026-10-06T16:26:54.885000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-06T16:26:54.885000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-06T16:26:54.885000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-105857"
    }
  }
}

published 2026-10-06 17:08Z
last change 2026-10-21 13:29Z

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