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CVE-2026-108709

CVE-2026-108709

validatedZero produced an exploit or a check.

GHSA-9qj3-8pcf-3r59 ↗EUVD-2026-103153 ↗

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.
Apache Software Foundation Apache Kylin >= 4.0.4, <= 5.0.4
CWE-287 Improper Authentication
ETK-2026-2016Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.8nvdCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
+2.1dTTV
1h 10mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0dcheck + exploit+2.1d
0
+1d

description

Apache Kylin versions 4.0.4 through 5.0.4 are affected by an authentication bypass. An attacker may gain access without normal authentication when an affected Kylin service is exposed to a public network; internally deployed instances are described as less likely to be affected.

mitigation

Upgrade Apache Kylin to version 5.0.5. Until upgraded, restrict Kylin service access to trusted internal networks and prevent direct public exposure.

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.
0.25%15th percentile
agent run time
1h 10m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-16 19:38Z
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. 2026-10-16 19:38Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-108709

this entry in the feed

GET /api/v1/feed/CVE-2026-108709

{
  "etk_id": "ETK-2026-2016",
  "cve_id": "CVE-2026-108709",
  "display_id": "CVE-2026-108709",
  "ghsa_id": "GHSA-9qj3-8pcf-3r59",
  "euvd_id": "EUVD-2026-103153",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authentication bypass in Apache Kylin",
  "summary": "Apache Kylin versions 4.0.4 through 5.0.4 are affected by an authentication bypass. An attacker may gain access without normal authentication when an affected Kylin service is exposed to a public network; internally deployed instances are described as less likely to be affected.",
  "mitigation": "Upgrade Apache Kylin to version 5.0.5. Until upgraded, restrict Kylin service access to trusted internal networks and prevent direct public exposure.",
  "vendor": "Apache Software Foundation",
  "product": "Apache Kylin",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0.4, <= 5.0.4"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Apache Kylin",
      "purl": null
    }
  ],
  "cwes": [
    287
  ],
  "cvss_score": 9.8,
  "cvss_src": "nvd",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0025,
  "epss_percentile": 0.1549,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": true,
  "pipeline_minutes": 70.19155848333334,
  "t0_at": "2026-10-16T19:38:21.601000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-18T22:05:24.067574+00:00",
      "days": 2.1021118816435185,
      "is_lower_bound": false,
      "measured_at": "2026-10-16T19:38:21.601000+00:00",
      "url": null
    },
    "exploit": {
      "at": "2026-10-18T22:05:24.067574+00:00",
      "days": 2.1021118816435185,
      "is_lower_bound": false,
      "measured_at": "2026-10-16T19:38:21.601000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-16T19:38:21.601000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-16T19:38:21.601000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-108709"
    }
  }
}

published 2026-10-18 20:55Z
last change 2026-10-21 08:08Z

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