Vulnerability-Lookup

GHSA-5HQH-JVJF-MPVW

Vulnerability from github – Published: 2026-10-14 09:31 – Updated: 2026-10-14 09:31

Details

The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.10.0 This is due to the wp_ajax_nopriv_simpleform_wp_register AJAX action lacking any capability check for role assignment and the save_custom_fields_to_user_meta() function using an exclusion list that omits wp_capabilities, combined with get_form_settings() returning a hard-coded defaults array that unconditionally enables meta writing regardless of the supplied form_id. This makes it possible for unauthenticated attackers to create a new Administrator-level WordPress account by supplying wp_capabilities[administrator]=1 alongside standard registration fields. The nonce required by the endpoint is publicly emitted into the front_end_data JavaScript object on every front-end page via wp_enqueue_scripts, making it trivially obtainable by any unauthenticated visitor before submitting the malicious request.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-104748"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-14T08:17:02Z",
    "severity": "CRITICAL"
  },
  "details": "The SimpleForm \u2013 Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.10.0 This is due to the `wp_ajax_nopriv_simpleform_wp_register` AJAX action lacking any capability check for role assignment and the `save_custom_fields_to_user_meta()` function using an exclusion list that omits `wp_capabilities`, combined with `get_form_settings()` returning a hard-coded defaults array that unconditionally enables meta writing regardless of the supplied `form_id`. This makes it possible for unauthenticated attackers to create a new Administrator-level WordPress account by supplying `wp_capabilities[administrator]=1` alongside standard registration fields. The nonce required by the endpoint is publicly emitted into the `front_end_data` JavaScript object on every front-end page via `wp_enqueue_scripts`, making it trivially obtainable by any unauthenticated visitor before submitting the malicious request.",
  "id": "GHSA-5hqh-jvjf-mpvw",
  "modified": "2026-10-14T09:31:34Z",
  "published": "2026-10-14T09:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104748"
    },
    {
      "type": "WEB",
      "url": "https://plugins.svn.wordpress.org/simple-form/trunk"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Assets.php#L265"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L184"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L291"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L32"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3726513/simple-form/trunk/app/Integrations/WordPressAuth.php"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b2b973fe-1209-43dc-b2a3-74086b12fe97?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-104748 (GCVE-0-2026-104748)

Vulnerability from cvelistv5 – Published: 2026-10-14 07:43 – Updated: 2026-10-15 16:43

Title

SimpleForm <= 3.10.0 - Unauthenticated Privilege Escalation to wp_capabilities Mass Assignment via simpleform_wp_register

Summary

The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.10.0 This is due to the `wp_ajax_nopriv_simpleform_wp_register` AJAX action lacking any capability check for role assignment and the `save_custom_fields_to_user_meta()` function using an exclusion list that omits `wp_capabilities`, combined with `get_form_settings()` returning a hard-coded defaults array that unconditionally enables meta writing regardless of the supplied `form_id`. This makes it possible for unauthenticated attackers to create a new Administrator-level WordPress account by supplying `wp_capabilities[administrator]=1` alongside standard registration fields. The nonce required by the endpoint is publicly emitted into the `front_end_data` JavaScript object on every front-end page via `wp_enqueue_scripts`, making it trivially obtainable by any unauthenticated visitor before submitting the malicious request.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-15 10:51 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

Wordfence CNA under the mitre root

CNA scorecard C 65/100 over 2313 records in the last 180 days details

References

7 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/simple…
https://plugins.trac.wordpress.org/browser/simple…
https://plugins.trac.wordpress.org/browser/simple…
https://plugins.trac.wordpress.org/browser/simple…
https://plugins.svn.wordpress.org/simple-form/trunk/
https://plugins.trac.wordpress.org/changeset/3726…

Impacted products

1 product

Vendor	Product	Version
wpazleen	SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications	Affected: 0 , ≤ 3.10.0 (semver)

Credits

Sebastian Albrecht (mySebbe)

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JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-104748",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-15T10:51:33.935369Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T16:43:48.707Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "SimpleForm \u2013 Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications",
          "vendor": "wpazleen",
          "versions": [
            {
              "lessThanOrEqual": "3.10.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Sebastian Albrecht (mySebbe)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The SimpleForm \u2013 Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.10.0 This is due to the `wp_ajax_nopriv_simpleform_wp_register` AJAX action lacking any capability check for role assignment and the `save_custom_fields_to_user_meta()` function using an exclusion list that omits `wp_capabilities`, combined with `get_form_settings()` returning a hard-coded defaults array that unconditionally enables meta writing regardless of the supplied `form_id`. This makes it possible for unauthenticated attackers to create a new Administrator-level WordPress account by supplying `wp_capabilities[administrator]=1` alongside standard registration fields. The nonce required by the endpoint is publicly emitted into the `front_end_data` JavaScript object on every front-end page via `wp_enqueue_scripts`, making it trivially obtainable by any unauthenticated visitor before submitting the malicious request."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269 Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-14T07:43:35.763Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b2b973fe-1209-43dc-b2a3-74086b12fe97?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L291"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L184"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L32"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Assets.php#L265"
        },
        {
          "url": "https://plugins.svn.wordpress.org/simple-form/trunk/"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3726513/simple-form/trunk/app/Integrations/WordPressAuth.php"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-10-03T14:35:51.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-10-13T19:40:33.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "SimpleForm \u003c= 3.10.0 - Unauthenticated Privilege Escalation to wp_capabilities Mass Assignment via simpleform_wp_register"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-104748",
    "datePublished": "2026-10-14T07:43:35.763Z",
    "dateReserved": "2026-10-02T12:06:56.683Z",
    "dateUpdated": "2026-10-15T16:43:48.707Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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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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.

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