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CVE-2026-67449

CVE-2026-67449

validatedZero produced an exploit or a check.
check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
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.
Portabase <= 1.21.1
fixed in >= 1.21.2
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
ETK-2026-4225Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.8cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
+46mTTV
14mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0mcheck available+46magent stopped
0
+10min
+20min
+30min
+40min
+50min

description

Portabase versions before 1.21.2 contain a path traversal flaw in the TUS upload webhook handler. An unauthenticated remote attacker who can reach that endpoint may overwrite files in Portabase's private data directory, including encryption key material.

mitigation

Upgrade Portabase to version 1.21.2 or later. Until upgraded, restrict network access to the TUS upload webhook endpoint to reduce exposure.

fixed in >= 1.21.2

check
available
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.
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
14m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-11 21:51Z
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

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

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

  1. 2026-11-11 21:51Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-67449

this entry in the feed

GET /api/v1/feed/CVE-2026-67449

{
  "etk_id": "ETK-2026-4225",
  "cve_id": "CVE-2026-67449",
  "display_id": "CVE-2026-67449",
  "ghsa_id": null,
  "euvd_id": null,
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated path traversal in Portabase TUS uploads",
  "summary": "Portabase versions before 1.21.2 contain a path traversal flaw in the TUS upload webhook handler. An unauthenticated remote attacker who can reach that endpoint may overwrite files in Portabase's private data directory, including encryption key material.",
  "mitigation": "Upgrade Portabase to version 1.21.2 or later. Until upgraded, restrict network access to the TUS upload webhook endpoint to reduce exposure.",
  "vendor": "Portabase",
  "product": "portabase",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.21.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        ">= 1.21.2"
      ],
      "package_name": null,
      "purl": null
    }
  ],
  "cwes": [
    22
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 14.11536615,
  "t0_at": "2026-11-11T21:51:23.105000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-11T22:37:30.459216+00:00",
      "days": 0.032029562685185184,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T21:51:23.105000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-11T21:51:23.105000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T21:51:23.105000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-67449"
    }
  }
}

published 2026-11-11 22:23Z
last change 2026-11-11 22:51Z

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