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CVE-2026-63011

CVE-2026-63011

validatedZero produced an exploit or a check.

GHSA-4m9w-3p93-6cwx ↗EUVD-2026-121330 ↗

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).−131dkevAttacks confirmed in the real world.
Intermesh groupoffice 26.0.26; 25.0.101; 6.8.166
fixed in 26.0.27, 25.0.102, 6.8.167
CWE-94 Improper Control of Generation of Code ('Code Injection')
ETK-2026-4074Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.4cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
+47mTTV
17mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
public poc−4.3motrigger signal (cve.org) +0mocheck available+0.0moagent stopped
−4mo
−3mo
−2mo
−1mo

description

GroupOffice versions before 6.8.167, 25.0.102, and 26.0.27 expose the Contact/labels JMAP endpoint to an authenticated template-processing attack. An authenticated user who can access that endpoint may cause operating-system commands to run as the web server account.

mitigation

Upgrade GroupOffice to 6.8.167, 25.0.102, or 26.0.27, as appropriate for the deployed release line. Restrict access to the Contact/labels JMAP endpoint to trusted authenticated users until the upgrade is complete.

fixed in 26.0.27, 25.0.102, 6.8.167

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.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
17m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-10 16:35Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−131d
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual check: a technique exists and was validated, 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. 2026-07-02 06:47Z
  2. 2026-11-10 16:35Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-63011

this entry in the feed

GET /api/v1/feed/CVE-2026-63011

{
  "etk_id": "ETK-2026-4074",
  "cve_id": "CVE-2026-63011",
  "display_id": "CVE-2026-63011",
  "ghsa_id": "GHSA-4m9w-3p93-6cwx",
  "euvd_id": "EUVD-2026-121330",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authenticated template injection in GroupOffice Contact labels",
  "summary": "GroupOffice versions before 6.8.167, 25.0.102, and 26.0.27 expose the Contact/labels JMAP endpoint to an authenticated template-processing attack. An authenticated user who can access that endpoint may cause operating-system commands to run as the web server account.",
  "mitigation": "Upgrade GroupOffice to 6.8.167, 25.0.102, or 26.0.27, as appropriate for the deployed release line. Restrict access to the Contact/labels JMAP endpoint to trusted authenticated users until the upgrade is complete.",
  "vendor": "Intermesh",
  "product": "groupoffice",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "26.0.26",
        "25.0.101",
        "6.8.166"
      ],
      "ecosystem": "php",
      "fixed_versions": [
        "26.0.27",
        "25.0.102",
        "6.8.167"
      ],
      "package_name": "groupoffice",
      "purl": null
    }
  ],
  "cwes": [
    94
  ],
  "cvss_score": 9.4,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 16.524600533333334,
  "t0_at": "2026-11-10T16:35:37.835000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-10T17:22:36.784775+00:00",
      "days": 0.03262673350694444,
      "is_lower_bound": false,
      "measured_at": "2026-11-10T16:35:37.835000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-07-02T06:47:32+00:00",
      "days": -131.40840086805557,
      "is_lower_bound": false,
      "measured_at": "2026-11-10T16:35:37.835000+00:00",
      "url": "https://github.com/Intermesh/groupoffice/security/advisories/GHSA-4m9w-3p93-6cwx"
    },
    "trigger_signal": {
      "at": "2026-11-10T16:35:37.835000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-10T16:35:37.835000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-63011"
    }
  }
}

published 2026-11-10 17:05Z
last change 2026-11-11 05:00Z

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