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CVE-2026-118690

CVE-2026-118690

validatedZero produced an exploit or a check.

GHSA-4r6j-f6gv-fqcx ↗EUVD-2026-112491 ↗

check availableZero validated a working check for it.proven exploitableZero has validated a full working exploit.
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.
SignalK signalk-server < 2.32.0
fixed in >=2.33.0
CWE-306 Missing Authentication for Critical Function
ETK-2026-2906Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:npm/signalk-server
cvss9.3cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
+36mTTV
20mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0mcheck + exploit+36m
0
+10min
+20min
+30min
+40min

description

Signal K Server releases before 2.33.0 allow unauthenticated remote access to log archives. If an affected server is reachable by an attacker, exposed secret material may allow them to impersonate an administrator and take control of the server.

mitigation

Upgrade signalk-server to version 2.33.0 or later. Until upgraded, restrict remote access to the server, especially log archive functionality, to trusted administrators and networks.

fixed in >=2.33.0

check
available
exploit
yes
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
20m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-28 21:11Z
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

Differential: the exploit fired on the vulnerable build and stayed silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-10-28 21:11Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-118690

this entry in the feed

GET /api/v1/feed/CVE-2026-118690

{
  "etk_id": "ETK-2026-2906",
  "cve_id": "CVE-2026-118690",
  "display_id": "CVE-2026-118690",
  "ghsa_id": "GHSA-4r6j-f6gv-fqcx",
  "euvd_id": "EUVD-2026-112491",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Missing authentication in Signal K Server log archive access",
  "summary": "Signal K Server releases before 2.33.0 allow unauthenticated remote access to log archives. If an affected server is reachable by an attacker, exposed secret material may allow them to impersonate an administrator and take control of the server.",
  "mitigation": "Upgrade signalk-server to version 2.33.0 or later. Until upgraded, restrict remote access to the server, especially log archive functionality, to trusted administrators and networks.",
  "vendor": "SignalK",
  "product": "signalk-server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 2.32.0"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        ">=2.33.0"
      ],
      "package_name": "signalk-server",
      "purl": "pkg:npm/signalk-server"
    }
  ],
  "cwes": [
    306
  ],
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": true,
  "pipeline_minutes": 19.7944241,
  "t0_at": "2026-10-28T21:11:17.919000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-28T21:47:27.501586+00:00",
      "days": 0.025110909560185184,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T21:11:17.919000+00:00",
      "url": null
    },
    "exploit": {
      "at": "2026-10-28T21:47:27.501586+00:00",
      "days": 0.025110909560185184,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T21:11:17.919000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-28T21:11:17.919000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T21:11:17.919000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-118690"
    }
  }
}

published 2026-10-28 21:27Z
last change 2026-10-30 02:40Z

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