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ETK-2026-3589Zero's internal tracking ID, independent of the CVE number.

ETK-2026-3589Zero's internal tracking ID, independent of the CVE number.

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

GHSA-3vf8-jg4r-xgcx ↗

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.
other:harnessrouter/harnessrouter (Docker image) < 0.37.16
fixed in 0.37.16
ETK-2026-3589Zero's internal tracking ID, independent of the CVE number., no cve assigned
cvss7.0ethiack provisional
16h 40msince last run
18mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org, not yet published
trigger signal −1.8dwaiting for further signals−0.7d
−1d
0

description

HarnessRouter Docker images before 0.37.16 can retain an earlier public DNS result for a hostname, allowing later browser requests to be redirected to private or local services. An attacker needs control of a hostname's DNS responses and a browser session permitted to visit that hostname. Vendor-hosted browser sessions may still be exposed to split DNS resolution unless hostname access is restricted.

mitigation

Upgrade the HarnessRouter Docker image to 0.37.16 or later. For vendor-hosted browser sessions, require a non-empty allow list of permitted hosts and enforce network egress controls where available.

fixed in 0.37.16

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.
–
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
–
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
18m
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

No artifact: an exploit or check was attempted but could not be produced at this moment.

source signals

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

  1. 2026-11-04 02:32Z

this entry in the feed

GET /api/v1/feed/ETK-2026-3589

{
  "etk_id": "ETK-2026-3589",
  "cve_id": null,
  "display_id": "ETK-2026-3589",
  "ghsa_id": "GHSA-3vf8-jg4r-xgcx",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "DNS rebinding in harnessrouter browser host validation",
  "summary": "HarnessRouter Docker images before 0.37.16 can retain an earlier public DNS result for a hostname, allowing later browser requests to be redirected to private or local services. An attacker needs control of a hostname's DNS responses and a browser session permitted to visit that hostname. Vendor-hosted browser sessions may still be exposed to split DNS resolution unless hostname access is restricted.",
  "mitigation": "Upgrade the HarnessRouter Docker image to 0.37.16 or later. For vendor-hosted browser sessions, require a non-empty allow list of permitted hosts and enforce network egress controls where available.",
  "vendor": "other",
  "product": "other:harnessrouter/harnessrouter (Docker image)",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 0.37.16"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "0.37.16"
      ],
      "package_name": "harnessrouter/harnessrouter (Docker image)",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7,
  "cvss_src": "ethiack_provisional",
  "cvss_vector": null,
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 17.800299366666668,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-11-04T02:32:41+00:00",
      "days": -1.8428532824074073,
      "is_lower_bound": true,
      "measured_at": "2026-11-05T22:46:23.561024+00:00",
      "url": "https://github.com/HarnessRouter/harnessrouter/security/advisories/GHSA-3vf8-jg4r-xgcx"
    }
  }
}

published 2026-11-05 05:53Z
last change 2026-11-05 22:29Z

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