Vulnerability-Lookup

GHSA-V348-VR4Q-FV9P

Vulnerability from github – Published: 2026-05-19 12:31 – Updated: 2026-06-29 22:58

Summary

TYPO3 sf_register extension allows unauthorized assignment of frontend user groups

Details

The create and edit flows in the TYPO3 extension sf_register do not restrict which user properties may be submitted, and do not enforce access control on the frontend user group assignment. As a result, an attacker can assign an arbitrary frontend user group to a newly registered or edited account, gaining unauthorized access to content and functionality restricted to privileged frontend user groups.

Severity

6.9 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "evoweb/sf-register"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "14.0.0"
            },
            {
              "fixed": "14.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "evoweb/sf-register"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "13.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-46721"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-29T22:58:05Z",
    "nvd_published_at": "2026-05-19T10:16:24Z",
    "severity": "MODERATE"
  },
  "details": "The `create` and `edit` flows in the TYPO3 extension sf_register do not restrict which user properties may be submitted, and do not enforce access control on the frontend user group assignment. As a result, an attacker can assign an arbitrary frontend user group to a newly registered or edited account, gaining unauthorized access to content and functionality restricted to privileged frontend user groups.",
  "id": "GHSA-v348-vr4q-fv9p",
  "modified": "2026-06-29T22:58:05Z",
  "published": "2026-05-19T12:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46721"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FriendsOfPHP/security-advisories/blob/master/evoweb/sf-register/CVE-2026-46721.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/evoWeb/sf_register"
    },
    {
      "type": "WEB",
      "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-009"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "TYPO3 sf_register extension allows unauthorized assignment of frontend user groups"
}

CVE-2026-46721 (GCVE-0-2026-46721)

Vulnerability from cvelistv5 – Published: 2026-05-19 09:19 – Updated: 2026-05-19 13:21

Title

Broken Access Control in extension "Frontend User Registration" (sf_register)

Summary

The create and edit flows do not restrict which user properties may be submitted and do not enforce access control on the frontend user group assignment. As a result, an attacker can assign an arbitrary frontend user group to a newly registered or edited account, gaining unauthorized access to content and functionality restricted to privileged frontend user groups.

Severity

6.9 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-19 13:21 UTC

CWE

Assigner

TYPO3 mitre root Scorecard

References

1 reference

URL	Tags
https://typo3.org/security/advisory/typo3-ext-sa-…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
TYPO3	Extension "Frontend User Registration"	Affected: 14.0.0 , < 14.0.2 (semver) Affected: 0 , < 13.2.4 (semver)

Date Public

2026-05-19 09:00

Credits

Seungbin Yang Sebastian Fischer

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-46721",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-19T13:21:27.294366Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-19T13:21:39.704Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://packagist.org/",
          "defaultStatus": "unaffected",
          "packageName": "evoweb/sf-register",
          "product": "Extension \"Frontend User Registration\"",
          "repo": "https://github.com/evoWeb/sf_register",
          "vendor": "TYPO3",
          "versions": [
            {
              "lessThan": "14.0.2",
              "status": "affected",
              "version": "14.0.0",
              "versionType": "semver"
            },
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              "version": "0",
              "versionType": "semver"
            }
          ]
        }
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          "type": "reporter",
          "value": "Seungbin Yang"
        },
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          "lang": "en",
          "type": "remediation developer",
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        }
      ],
      "datePublic": "2026-05-19T09:00:00.000Z",
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            }
          ],
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      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
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            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
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            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
        "shortName": "TYPO3"
      },
      "references": [
        {
          "tags": [
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          ],
          "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-009"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Broken Access Control in extension \"Frontend User Registration\" (sf_register)",
      "x_generator": {
        "engine": "Vulnogram 1.0.0"
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  "cveMetadata": {
    "assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a",
    "assignerShortName": "TYPO3",
    "cveId": "CVE-2026-46721",
    "datePublished": "2026-05-19T09:19:10.688Z",
    "dateReserved": "2026-05-16T09:55:27.478Z",
    "dateUpdated": "2026-05-19T13:21:39.704Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

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.

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.
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GHSA-V348-VR4Q-FV9P

CVE-2026-46721 (GCVE-0-2026-46721)

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