CVE-2026-110447

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

GHSA-f97p-r72q-64h2 ↗EUVD-2026-100780 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).+16h55mkevAttacks confirmed in the real world.0d
Collabora Online - Built-in CODE Server < 26.4.303
fixed in 26.4.303
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
ETK-2026-1539Zero's internal tracking ID, independent of the CVE number., permanent identifier
1d 09h 16msince last run
35mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org publication
trigger signal (cve.org) +0hkev+0hpublic poc+16h55mwaiting for further signals+137h23m
0
+6h
+12h

description

The richdocumentscode Nextcloud app before 26.4.303 is affected when using its built-in CODE Server. An unauthenticated remote attacker may execute operating-system commands while that server is not running, including after a restart; standalone Collabora Online servers are not affected.

mitigation

Upgrade richdocumentscode to version 26.4.303 or later. Prioritize systems using the built-in CODE Server and minimize externally reachable exposure during restarts until the update is applied.

fixed in 26.4.303

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.
contextual
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.
1.2%68th percentile
agent run time
35m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-14 02:27Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
+16h55m
Δ to kevAttacks confirmed in the real world.
0d

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

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

  1. 2026-10-14 00:00Z
  2. 2026-10-14 02:27Z
    cve_org: trigger signal, started the run
  3. 2026-10-14 17:38Z
    Hackers Backdoor Nextcloud Servers Through Critical Flaw in Collabora’s Built-in CODE App
  4. 2026-10-18 18:48Z

this entry in the feed

GET /api/v1/feed/CVE-2026-110447

{
  "etk_id": "ETK-2026-1539",
  "cve_id": "CVE-2026-110447",
  "display_id": "CVE-2026-110447",
  "ghsa_id": "GHSA-f97p-r72q-64h2",
  "euvd_id": "EUVD-2026-100780",
  "status": "published",
  "anchor_state": "anchored",
  "title": "OS command injection in richdocumentscode built-in CODE Server",
  "summary": "The richdocumentscode Nextcloud app before 26.4.303 is affected when using its built-in CODE Server. An unauthenticated remote attacker may execute operating-system commands while that server is not running, including after a restart; standalone Collabora Online servers are not affected.",
  "mitigation": "Upgrade richdocumentscode to version 26.4.303 or later. Prioritize systems using the built-in CODE Server and minimize externally reachable exposure during restarts until the update is applied.",
  "vendor": "Collabora",
  "product": "Collabora Online - Built-in CODE Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 26.4.303"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "26.4.303"
      ],
      "package_name": "richdocumentscode",
      "purl": null
    }
  ],
  "cwes": [
    78
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0123,
  "epss_percentile": 0.6841,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 35.10256811666667,
  "t0_at": "2026-10-14T02:27:42.315000+00:00",
  "signals": {
    "kev": {
      "at": "2026-10-14T00:00:00+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T02:27:42.315000+00:00",
      "precision": "day",
      "url": "https://vulncheck.com/cve/CVE-2026-110447"
    },
    "public_poc": {
      "at": "2026-10-14T19:22:35+00:00",
      "days": 0.7047764467592592,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T02:27:42.315000+00:00",
      "url": "https://github.com/adriyansyah-mf/cve-2026-110447"
    },
    "trigger_signal": {
      "at": "2026-10-14T02:27:42.315000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T02:27:42.315000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-110447"
    }
  }
}

published 2026-10-14 06:01Z
last change 2026-10-21 03:59Z

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