Vulnerability-Lookup

GHSA-9C9V-5P57-4QFM

Vulnerability from github – Published: 2026-10-03 06:31 – Updated: 2026-10-03 06:31

Details

The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Privilege Escalation via Contact Identity Rebinding in all versions up to, and including, 4.9 The vulnerability exists because the create_contact function in the v3 REST endpoint (POST /gh/v3/contacts) is gated solely by the add_contacts capability and forwards the full request payload — including the security-bearing user_id column — into the upsert path of Contacts_DB::add(), which bypasses the ownership guard that Contacts_DB::update() enforces, allowing an attacker to rebind any existing contact record to an arbitrary WordPress user ID. This makes it possible for authenticated attackers with Sales Representative-level access and above to upsert their own contact row to point to an Administrator's user ID, then invoke the v4 email-test endpoint (POST /gh/v4/emails/test) — also accessible to the Sales Representative role via the send_emails capability — to generate an {auto_login_url} one-time permissions key bound to the rebound contact, and consume that link to call wp_set_auth_cookie() and gain a fully authenticated session as the WordPress Administrator.

Severity

8.8 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97644"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-03T04:18:04Z",
    "severity": "HIGH"
  },
  "details": "The Groundhogg \u2014 CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Privilege Escalation via Contact Identity Rebinding in all versions up to, and including, 4.9 The vulnerability exists because the `create_contact` function in the v3 REST endpoint (`POST /gh/v3/contacts`) is gated solely by the `add_contacts` capability and forwards the full request payload \u2014 including the security-bearing `user_id` column \u2014 into the upsert path of `Contacts_DB::add()`, which bypasses the ownership guard that `Contacts_DB::update()` enforces, allowing an attacker to rebind any existing contact record to an arbitrary WordPress user ID. This makes it possible for authenticated attackers with Sales Representative-level access and above to upsert their own contact row to point to an Administrator\u0027s user ID, then invoke the v4 email-test endpoint (`POST /gh/v4/emails/test`) \u2014 also accessible to the Sales Representative role via the `send_emails` capability \u2014 to generate an `{auto_login_url}` one-time permissions key bound to the rebound contact, and consume that link to call `wp_set_auth_cookie()` and gain a fully authenticated session as the WordPress Administrator.",
  "id": "GHSA-9c9v-5p57-4qfm",
  "modified": "2026-10-03T06:31:12Z",
  "published": "2026-10-03T06:31:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97644"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v3/contacts-api.php#L373"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v4/emails-api.php#L571"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/db/contacts.php#L205"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/main-roles.php#L532"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/replacements.php#L2280"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/rewrites.php#L460"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3724910/groundhogg/trunk/api/v3/contacts-api.php"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3724910%40groundhogg%2Ftags%2F4.9.1\u0026old=3724058%40groundhogg%2Ftags%2F4.9"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/557306b7-7b66-465e-8d4d-ebae5b1577c9?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-97644 (GCVE-0-2026-97644)

Vulnerability from cvelistv5 – Published: 2026-10-03 03:25 – Updated: 2026-10-03 15:42

Title

Groundhogg <= 4.9 - Authenticated (Sales Person+) Privilege Escalation via Contact Identity Rebinding leading to Administrator Account Takeover to 'user_id' Parameter (v3 /contacts) chained with v4 /emails/test

Summary

The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Privilege Escalation via Contact Identity Rebinding in all versions up to, and including, 4.9 The vulnerability exists because the `create_contact` function in the v3 REST endpoint (`POST /gh/v3/contacts`) is gated solely by the `add_contacts` capability and forwards the full request payload — including the security-bearing `user_id` column — into the upsert path of `Contacts_DB::add()`, which bypasses the ownership guard that `Contacts_DB::update()` enforces, allowing an attacker to rebind any existing contact record to an arbitrary WordPress user ID. This makes it possible for authenticated attackers with Sales Representative-level access and above to upsert their own contact row to point to an Administrator's user ID, then invoke the v4 email-test endpoint (`POST /gh/v4/emails/test`) — also accessible to the Sales Representative role via the `send_emails` capability — to generate an `{auto_login_url}` one-time permissions key bound to the rebound contact, and consume that link to call `wp_set_auth_cookie()` and gain a fully authenticated session as the WordPress Administrator.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-03 15:33 UTC

CWE

CWE-269 - Improper Privilege Management

Assigner

Wordfence mitre root Scorecard

References

9 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/ground…
https://plugins.trac.wordpress.org/browser/ground…
https://plugins.trac.wordpress.org/browser/ground…
https://plugins.trac.wordpress.org/browser/ground…
https://plugins.trac.wordpress.org/browser/ground…
https://plugins.trac.wordpress.org/browser/ground…
https://plugins.trac.wordpress.org/changeset?repo…
https://plugins.trac.wordpress.org/changeset/3724…

Impacted products

1 product

Vendor	Product	Version
trainingbusinesspros	Groundhogg — CRM, Newsletters, and Marketing Automation	Affected: 0 , ≤ 4.9 (semver)

Credits

Supakiad S. (m3ez)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-97644",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-03T15:33:36.949763Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-03T15:42:46.419Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Groundhogg \u2014 CRM, Newsletters, and Marketing Automation",
          "vendor": "trainingbusinesspros",
          "versions": [
            {
              "lessThanOrEqual": "4.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Supakiad S. (m3ez)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Groundhogg \u2014 CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Privilege Escalation via Contact Identity Rebinding in all versions up to, and including, 4.9 The vulnerability exists because the `create_contact` function in the v3 REST endpoint (`POST /gh/v3/contacts`) is gated solely by the `add_contacts` capability and forwards the full request payload \u2014 including the security-bearing `user_id` column \u2014 into the upsert path of `Contacts_DB::add()`, which bypasses the ownership guard that `Contacts_DB::update()` enforces, allowing an attacker to rebind any existing contact record to an arbitrary WordPress user ID. This makes it possible for authenticated attackers with Sales Representative-level access and above to upsert their own contact row to point to an Administrator\u0027s user ID, then invoke the v4 email-test endpoint (`POST /gh/v4/emails/test`) \u2014 also accessible to the Sales Representative role via the `send_emails` capability \u2014 to generate an `{auto_login_url}` one-time permissions key bound to the rebound contact, and consume that link to call `wp_set_auth_cookie()` and gain a fully authenticated session as the WordPress Administrator."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269 Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T03:25:44.527Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/557306b7-7b66-465e-8d4d-ebae5b1577c9?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v3/contacts-api.php#L373"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/db/contacts.php#L205"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v4/emails-api.php#L571"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/replacements.php#L2280"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/rewrites.php#L460"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/main-roles.php#L532"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3724910%40groundhogg%2Ftags%2F4.9.1\u0026old=3724058%40groundhogg%2Ftags%2F4.9"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3724910/groundhogg/trunk/api/v3/contacts-api.php"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-24T18:35:22.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-10-02T14:47:56.000Z",
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      "title": "Groundhogg \u003c= 4.9 - Authenticated (Sales Person+) Privilege Escalation via Contact Identity Rebinding leading to Administrator Account Takeover to \u0027user_id\u0027 Parameter (v3 /contacts) chained with v4 /emails/test"
    }
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  "dataVersion": "5.2"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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-9C9V-5P57-4QFM

CVE-2026-97644 (GCVE-0-2026-97644)

Tags

Sightings

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