CVE-2026-55494

validatedZero produced an exploit or a check.

GHSA-wgw2-c96g-p7h7 ↗EUVD-2026-90193 ↗

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).+38mkevAttacks confirmed in the real world.
Quenary tugtainer <= 1.30.2
fixed in v1.30.4
CWE-284 Improper Access Control
ETK-2026-132, permanent identifier
+47mTTV
17mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0mpublic poc+38mcheck + exploit+47m
0
+10min
+20min
+30min
+50min

description

Quenary tugtainer Agent versions before 1.30.4 can expose Docker management APIs without authentication. An attacker can access protected Agent API routes when AGENT_SECRET is not configured.

mitigation

Upgrade tugtainer to version 1.30.4 or later. Configure AGENT_SECRET on any Agent that remains exposed until it is upgraded.

fixed in v1.30.4

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.
0.64%49th percentile
agent run time
17m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-09-30 16:58Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
+38m
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. 2026-09-30 16:58Z
    cve_org: trigger signal, started the run
  2. 2026-09-30 17:36Z
    4qu4r1um/tugtainer-1.30.2-CVE-2026-55494-and-CVE-2026-62308-to-RCE

this entry in the feed

GET /api/v1/feed/CVE-2026-55494

{
  "etk_id": "ETK-2026-132",
  "cve_id": "CVE-2026-55494",
  "display_id": "CVE-2026-55494",
  "ghsa_id": "GHSA-wgw2-c96g-p7h7",
  "euvd_id": "EUVD-2026-90193",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authentication bypass in Quenary tugtainer Agent",
  "summary": "Quenary tugtainer Agent versions before 1.30.4 can expose Docker management APIs without authentication. An attacker can access protected Agent API routes when AGENT_SECRET is not configured.",
  "mitigation": "Upgrade tugtainer to version 1.30.4 or later. Configure AGENT_SECRET on any Agent that remains exposed until it is upgraded.",
  "vendor": "Quenary",
  "product": "tugtainer",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.30.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "v1.30.4"
      ],
      "package_name": "tugtainer-agent",
      "purl": null
    }
  ],
  "cwes": [
    284
  ],
  "cvss_score": 9.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0064,
  "epss_percentile": 0.4972,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": true,
  "pipeline_minutes": 16.586019883333332,
  "t0_at": "2026-09-30T16:58:27.259000+00:00",
  "signals": {
    "check": {
      "at": "2026-09-30T17:45:17.630221+00:00",
      "days": 0.0325274446875,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T16:58:27.259000+00:00",
      "url": null
    },
    "exploit": {
      "at": "2026-09-30T17:45:17.630221+00:00",
      "days": 0.0325274446875,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T16:58:27.259000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-09-30T17:36:12.333801+00:00",
      "days": 0.026216143530092592,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T16:58:27.259000+00:00",
      "url": "https://github.com/4qu4r1um/tugtainer-1.30.2-CVE-2026-55494-and-CVE-2026-62308-to-RCE"
    },
    "trigger_signal": {
      "at": "2026-09-30T16:58:27.259000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T16:58:27.259000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-55494"
    }
  }
}

published 2026-09-30 17:28Z
last change 2026-10-21 03:59Z

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