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CVE-2026-61843

CVE-2026-61843

validatedZero produced an exploit or a check.

GHSA-r787-5hp3-4874 ↗EUVD-2026-101667 ↗

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.
error311 FileRise v3.17.0
fixed in v3.18.0
CWE-862 Missing Authorization
ETK-2026-1633Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss8.2cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
+7h10mTTV
21mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0hcheck available+7h10magent stopped
0
+2h
+4h
+6h
+8h

description

FileRise versions before 3.18.0 do not adequately prevent uploads from replacing files that already exist. An attacker with a valid upload-enabled sharing link and its configured password, or certain authenticated upload access, can overwrite stored file contents without edit permission.

mitigation

Upgrade FileRise to version 3.18.0 or later. Until upgraded, disable or restrict upload-enabled sharing links and limit upload access to trusted users.

fixed in v3.18.0

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.
0.31%22nd percentile
agent run time
21m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-14 20:22Z
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. 2026-10-14 20:22Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-61843

this entry in the feed

GET /api/v1/feed/CVE-2026-61843

{
  "etk_id": "ETK-2026-1633",
  "cve_id": "CVE-2026-61843",
  "display_id": "CVE-2026-61843",
  "ghsa_id": "GHSA-r787-5hp3-4874",
  "euvd_id": "EUVD-2026-101667",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthorized file overwrite in FileRise uploads",
  "summary": "FileRise versions before 3.18.0 do not adequately prevent uploads from replacing files that already exist. An attacker with a valid upload-enabled sharing link and its configured password, or certain authenticated upload access, can overwrite stored file contents without edit permission.",
  "mitigation": "Upgrade FileRise to version 3.18.0 or later. Until upgraded, disable or restrict upload-enabled sharing links and limit upload access to trusted users.",
  "vendor": "error311",
  "product": "FileRise",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "v3.17.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "v3.18.0"
      ],
      "package_name": "FileRise",
      "purl": null
    }
  ],
  "cwes": [
    862
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
  "epss_score": 0.0031,
  "epss_percentile": 0.2208,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 20.91423058333333,
  "t0_at": "2026-10-14T20:22:57.741000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-15T03:33:18.968086+00:00",
      "days": 0.29885679497685186,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T20:22:57.741000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-14T20:22:57.741000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T20:22:57.741000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-61843"
    }
  }
}

published 2026-10-15 03:12Z
last change 2026-10-21 16:09Z

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