CVE-2026-105212

{
  "etk_id": "ETK-2026-575",
  "cve_id": "CVE-2026-105212",
  "display_id": "CVE-2026-105212",
  "ghsa_id": "GHSA-4727-2r9w-rpch",
  "euvd_id": "EUVD-2026-92105",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authentication bypass in ZITADEL hosted Login UIs",
  "summary": "ZITADEL hosted Login V1 and Login V2 are affected in 3.x versions earlier than 3.4.14 and 4.x versions earlier than 4.16.2. An unauthenticated attacker who knows a user's login name may add an attacker-controlled authenticator and access that account without satisfying its existing password or MFA requirements.",
  "mitigation": "Upgrade ZITADEL 3.x to 3.4.14 or later, or ZITADEL 4.x to 4.16.2 or later. Prioritize instances that expose the hosted Login V1 or Login V2 interfaces.",
  "vendor": "zitadel",
  "product": "zitadel",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 4.16.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "4.16.2"
      ],
      "package_name": "zitadel",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, < 3.4.14"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.4.14"
      ],
      "package_name": "zitadel",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
  "epss_score": 0.0032,
  "epss_percentile": 0.237,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 20.5124581,
  "t0_at": "2026-10-04T13:10:05.215000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-04T18:02:48.175507+00:00",
      "days": 0.20327500586805555,
      "is_lower_bound": false,
      "measured_at": "2026-10-04T13:10:05.215000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-04T13:10:05.215000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-04T13:10:05.215000+00:00",
      "url": "https://github.com/advisories/GHSA-4727-2r9w-rpch"
    }
  }
}