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ETK-2026-2527Zero's internal tracking ID, independent of the CVE number.

ETK-2026-2527Zero's internal tracking ID, independent of the CVE number.

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

GHSA-m7gv-mpg5-7c9v ↗

no check availablenot proven exploitable
awaiting cvepublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
npm n8n < 1.123.85; < 2.44.1; < 2.43.5
fixed in >= 1.123.85, >= 2.44.1, >= 2.43.5
ETK-2026-2527Zero's internal tracking ID, independent of the CVE number., no cve assigned
pkg:npm/n8n
cvss7.1cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
2h 08msince last run
21mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
trigger signal +0dwaiting for further signals+8.6d
0
+2d
+4d
+6d
+8d

description

The Read/Write Files from Disk node in n8n can block the main event loop when processing certain File(s) Selector patterns. A user able to create and run workflows could cause the n8n UI, API, webhooks, and health checks to become unavailable until the process is restarted.

mitigation

Upgrade n8n to >= 1.123.85, >= 2.44.1, >= 2.43.5 or later.

fixed in >= 1.123.85, >= 2.44.1, >= 2.43.5

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.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
21m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
not published yet
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. 2026-10-14 09:36Z

this entry in the feed

GET /api/v1/feed/ETK-2026-2527

{
  "etk_id": "ETK-2026-2527",
  "cve_id": null,
  "display_id": "ETK-2026-2527",
  "ghsa_id": "GHSA-m7gv-mpg5-7c9v",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Regular expression denial of service in n8n file selector",
  "summary": "The Read/Write Files from Disk node in n8n can block the main event loop when processing certain File(s) Selector patterns. A user able to create and run workflows could cause the n8n UI, API, webhooks, and health checks to become unavailable until the process is restarted.",
  "mitigation": "Upgrade n8n to >= 1.123.85, >= 2.44.1, >= 2.43.5 or later.",
  "vendor": "npm",
  "product": "n8n",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 1.123.85"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        ">= 1.123.85"
      ],
      "package_name": "n8n",
      "purl": "pkg:npm/n8n"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 2.44.1"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        ">= 2.44.1"
      ],
      "package_name": "n8n",
      "purl": "pkg:npm/n8n"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 2.43.5"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        ">= 2.43.5"
      ],
      "package_name": "n8n",
      "purl": "pkg:npm/n8n"
    }
  ],
  "cwes": null,
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 20.63989875,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T09:36:05+00:00",
      "days": -8.681890515231482,
      "is_lower_bound": true,
      "measured_at": "2026-10-23T01:58:00.364681+00:00",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-m7gv-mpg5-7c9v"
    }
  }
}

published 2026-10-22 23:56Z
last change 2026-10-23 00:22Z

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