Vulnerability-Lookup

CVE-2026-54693 (GCVE-0-2026-54693)

Vulnerability from cvelistv5 – Published: 2026-07-29 16:50 – Updated: 2026-07-29 17:54

Title

ZITADEL Users Can Self-Verify Email/Phone via API

Summary

ZITADEL is an open source identity management platform. From 2.43.0 through 2.71.19, from 3.0.0 until 3.4.11, and from 4.0.0 until 4.15.1, the email and phone self-management API paths in internal/command/user_v2_email.go, internal/command/user_v2_phone.go, and internal/command/user_v2_human.go allowed users to request returned verification codes without the required permission, allowing users to claim ownership of email addresses or phone numbers they do not control and bypass email-based or phone-based security policies. This issue is fixed in versions 3.4.11 and 4.15.1.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-29 17:54 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M mitre root

References

6 references

URL	Tags
https://github.com/zitadel/zitadel/security/advis…	x_refsource_CONFIRM
https://github.com/zitadel/zitadel/commit/90f3102…	x_refsource_MISC
https://github.com/zitadel/zitadel/commit/a1748b2…	x_refsource_MISC
https://github.com/zitadel/zitadel/commit/ed09b3d…	x_refsource_MISC
https://github.com/zitadel/zitadel/releases/tag/v3.4.11	x_refsource_MISC
https://github.com/zitadel/zitadel/releases/tag/v4.15.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
zitadel	zitadel	Affected: >= 2.43.0, <= 2.71.19 Affected: >= 3.0.0-rc.1, < 3.4.11 Affected: >= 4.0.0-rc.1, < 4.15.1	guessed

Show details on NVD website

JSON

To clipboard

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          }
        ],
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}

FKIE_CVE-2026-54693

Vulnerability from fkie_nvd - Published: 2026-07-29 17:16 - Updated: 2026-07-30 20:07

Severity

8.2 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/zitadel/zitadel/commit/90f310212d3a5075084a603bf61fed549c92956d
	security-advisories@github.com	https://github.com/zitadel/zitadel/commit/a1748b2f0326ddf7be0de44b4f980ae2c07c0151
	security-advisories@github.com	https://github.com/zitadel/zitadel/commit/ed09b3df7f43e870423e4d8f2757e6894481604f
	security-advisories@github.com	https://github.com/zitadel/zitadel/releases/tag/v3.4.11
	security-advisories@github.com	https://github.com/zitadel/zitadel/releases/tag/v4.15.1
	security-advisories@github.com	https://github.com/zitadel/zitadel/security/advisories/GHSA-jq8w-8q2f-ffm9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "zitadel",
          "vendor": "zitadel",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.43.0, \u003c= 2.71.19"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0-rc.1, \u003c 3.4.11"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0-rc.1, \u003c 4.15.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
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      "value": "ZITADEL is an open source identity management platform. From 2.43.0 through 2.71.19, from 3.0.0 until 3.4.11, and from 4.0.0 until 4.15.1, the email and phone self-management API paths in internal/command/user_v2_email.go, internal/command/user_v2_phone.go, and internal/command/user_v2_human.go allowed users to request returned verification codes without the required permission, allowing users to claim ownership of email addresses or phone numbers they do not control and bypass email-based or phone-based security policies. This issue is fixed in versions 3.4.11 and 4.15.1."
    }
  ],
  "id": "CVE-2026-54693",
  "lastModified": "2026-07-30T20:07:01.330",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54693",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-29T17:54:24.167596Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-29T17:16:53.067",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zitadel/zitadel/commit/90f310212d3a5075084a603bf61fed549c92956d"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zitadel/zitadel/commit/a1748b2f0326ddf7be0de44b4f980ae2c07c0151"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zitadel/zitadel/commit/ed09b3df7f43e870423e4d8f2757e6894481604f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v3.4.11"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v4.15.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-jq8w-8q2f-ffm9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-JQ8W-8Q2F-FFM9

Vulnerability from github – Published: 2026-07-29 16:54 – Updated: 2026-07-29 16:54

Summary

ZITADEL Users Can Self-Verify Email/Phone via API

Details

Summary

A vulnerability in Zitadel's self-management capability allowed users to mark their email and phone as verified without going through an actual verification process.

While GHSA-282g-fhmx-xf54 (CVE-2026-27946, "Users Can Self-Verify Email/Phone via UpdateHumanUser API") closed the path that let any authenticated user mark an arbitrary email or phone as verified on their own account by calling UpdateHumanUser with email.is_verified: true, additional paths were discovered.

Impact

Zitadel provides an API for managing users. The API also allows users to self-manage their own data including updating the email and phone.

Due to an improper permission check, the API allowed returning the verification code for the email and phone to the own user. This allows users to claim ownership of an email or phone they do not control and potentially bypass email-based security policies.

Note that when changing another user's email or phone, regardless of the verification flag, the permissions were correctly checked.

Affected Versions

Systems running one of the following versions are affected: - 4.x: 4.0.0 through 4.15.0 (including RC versions) - 3.x: 3.0.0 through 3.4.10 (including RC versions) - 2.x: 2.43.0 through 2.71.19

Patches

The vulnerability has been addressed in the latest releases. The patch resolves the issue by requiring the correct permission in case the verification flag is provided and only allows self-management of the email address, resp. phone number itself.

4.x: Upgrade to >=4.15.1 3.x: Update to >=3.4.11 2.x: Update to >=3.4.11

Workarounds

The recommended solution is to upgrade to a patched version. If an upgrade is not possible, an action (v2) could be used to prevent returning the verification code to the own user.

Questions

If you have any questions or comments about this advisory, please email us at security@zitadel.com

Credits

Thanks to eddieran for reporting this vulnerability.

Severity

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

Show details on source website

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 4.15.1"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/zitadel/zitadel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 3.4.11"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/zitadel/zitadel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.43.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/zitadel/zitadel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.80.0-v2.20.0.20260608144108-ed09b3df7f43"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54693"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-29T16:54:49Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n\nA vulnerability in Zitadel\u0027s self-management capability allowed users to mark their email and phone as verified without going through an actual verification process.\n\nWhile [`GHSA-282g-fhmx-xf54`](https://github.com/zitadel/zitadel/security/advisories/GHSA-282g-fhmx-xf54) (CVE-2026-27946, \"Users Can Self-Verify Email/Phone via UpdateHumanUser API\") closed the path that let any authenticated user mark an arbitrary email or phone as verified on their own account by calling `UpdateHumanUser` with `email.is_verified: true`, additional paths were discovered.\n\n### Impact \n\nZitadel provides an API for managing users. The API also allows users to self-manage their own data including updating the email and phone.\n\nDue to an improper permission check, the API allowed returning the verification code for the email and phone to the own user.\nThis allows users to claim ownership of an email or phone they do not control and potentially bypass email-based security policies.\n\nNote that when changing another user\u0027s email or phone, regardless of the verification flag, the permissions were correctly checked.\n\n### Affected Versions\n\nSystems running one of the following versions are affected:\n- **4.x**: `4.0.0` through `4.15.0` (including RC versions)\n- **3.x**: `3.0.0` through `3.4.10` (including RC versions)\n- **2.x**: `2.43.0` through `2.71.19`\n\n### Patches\n\nThe vulnerability has been addressed in the latest releases. The patch resolves the issue by requiring the correct permission in case the verification flag is provided and only allows self-management of the email address, resp. phone number itself.\n\n4.x: Upgrade to \u003e=[4.15.1](https://github.com/zitadel/zitadel/releases/tag/v4.15.1)\n3.x: Update to \u003e=[3.4.11](https://github.com/zitadel/zitadel/releases/tag/v3.4.11)\n2.x: Update to \u003e=[3.4.11](https://github.com/zitadel/zitadel/releases/tag/v3.4.11)\n\n### Workarounds\n\nThe recommended solution is to upgrade to a patched version. If an upgrade is not possible, an action (v2) could be used to prevent returning the verification code to the own user.\n\n### Questions\n\nIf you have any questions or comments about this advisory, please email us at [security@zitadel.com](mailto:security@zitadel.com)\n\n\n### Credits\n\nThanks to [eddieran](https://github.com/eddieran) for reporting this vulnerability.",
  "id": "GHSA-jq8w-8q2f-ffm9",
  "modified": "2026-07-29T16:54:49Z",
  "published": "2026-07-29T16:54:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/security/advisories/GHSA-jq8w-8q2f-ffm9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/commit/90f310212d3a5075084a603bf61fed549c92956d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/commit/a1748b2f0326ddf7be0de44b4f980ae2c07c0151"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/commit/ed09b3df7f43e870423e4d8f2757e6894481604f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zitadel/zitadel"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v3.4.11"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zitadel/zitadel/releases/tag/v4.15.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ZITADEL Users Can Self-Verify Email/Phone via API"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-54693 (GCVE-0-2026-54693)

FKIE_CVE-2026-54693

GHSA-JQ8W-8Q2F-FFM9

Summary

Impact

Affected Versions

Patches

Workarounds

Questions

Credits

Tags

Sightings

Nomenclature

Related by attack behaviour