ETK-2026-3865Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-3865",
  "cve_id": null,
  "display_id": "ETK-2026-3865",
  "ghsa_id": "GHSA-7wx6-3578-7w2h",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Overprivileged MCP agent tokens in lemmary",
  "summary": "Lemmary versions before 2026.11.6 issue MCP agent tokens that retain the full permissions of the account that generated them. An untrusted integration or attacker that obtains such a token can use non-MCP REST endpoints as that account, including administrative user-management actions when the issuing account is an administrator. Exploitation requires possession of a generated MCP agent token and access to the application's REST interface.",
  "mitigation": "Upgrade lemmary to version 2026.11.6 or later. Until upgraded, revoke exposure by disabling MCP token generation and replacing or restricting integrations that hold existing agent tokens.",
  "vendor": "other",
  "product": "other:lemmary",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 2026.11.6"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "2026.11.6"
      ],
      "package_name": "lemmary",
      "purl": null
    }
  ],
  "cwes": [
    269
  ],
  "cvss_score": 8.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 20.6946894,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-11-06T22:11:59+00:00",
      "days": -1.1213721964814816,
      "is_lower_bound": true,
      "measured_at": "2026-11-08T01:06:45.595388+00:00",
      "url": "https://github.com/buldezir/lemmary/security/advisories/GHSA-7wx6-3578-7w2h"
    },
    "trigger_signal": {
      "at": "2026-11-06T22:11:59+00:00",
      "days": -1.1213721964814816,
      "is_lower_bound": true,
      "measured_at": "2026-11-08T01:06:45.595388+00:00",
      "url": "https://github.com/buldezir/lemmary/security/advisories/GHSA-7wx6-3578-7w2h"
    }
  }
}