{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.12.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/zitadel/zitadel/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.12.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.12.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/zitadel/zitadel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.12.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-29193"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-04T22:51:16Z",
    "nvd_published_at": "2026-03-07T15:15:55Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nA vulnerability in Zitadel\u0027s login V2 UI allowed users to bypass login behavior and security policies and self-register new accounts or sign in using password even if corresponding options were disabled in their organizaton.\n\n### Impact\n\nZitadel enables administrators to configure their organization\u2019s login behavior and security policies. As part of this functionality, they can disable user self-registration, enforce passwordless logins only, and more.\n\nDue to improper enforcement an attacker could send direct HTTP requests to the login UI and create accounts in organizations that have disabled user self-registration, and gain unauthorized access to the system.\nThe same attack vector could be used to authenticate for example using username and password even when this login method was disabled.\n\n### Affected Versions\n\nSystems running one of the following versions are affected:\n- **4.x**: `4.0.0` through `4.12.0` (including RC versions)\n\n### Patches\n\nThe vulnerability has been addressed in the latest releases. The patch resolves the issue by enforcing the policies on the logiin UI server.\n\n4.x: Upgrade to \u003e=[4.12.1](https://github.com/zitadel/zitadel/releases/tag/v4.12.1)\n\n### Workarounds\n\nThe recommended solution is to upgrade to a patched version.\n\n### Questions\n\nIf there are any questions or comments about this advisory, please send an email to [security@zitadel.com](mailto:security@zitadel.com)\n\n### Credits \n\nZITADEL extends thanks once again to Amit Laish from GE Vernova for finding and reporting the vulnerability.",
  "id": "GHSA-25rw-g6ff-fmg8",
  "modified": "2026-03-09T15:46:19Z",
  "published": "2026-03-04T22:51:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-25rw-g6ff-fmg8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29193"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zitadel/zitadel"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v4.12.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ZITADEL: Login V2 UI Policy Bypass Allows Unauthorized Self-Registration and Authentication"
}