Vulnerability-Lookup

GHSA-8QFX-8GPQ-WC4Q

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

Details

The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress is vulnerable to unauthorized account access via Use of Predictable Password in all versions up to, and including, 1.2.78 The vulnerability exists because get_dummy_user_passowrd() derives the shared password for all 25 built-in dummy user accounts as the first 15 characters of substr(hash('SHA256', AUTH_KEY . site_url()), 0, 25), while the full 25-character value of that same hash is simultaneously embedded in the hidden uwp_register_hash field rendered on every registration form response — reachable without authentication via both the public /register/ page and the wp_ajax_nopriv_uwp_ajax_register_form AJAX handler, even when user registration is disabled. This makes it possible for unauthenticated attackers to recover the dummy user password directly from a single HTTP request and use it to authenticate as any of the 25 built-in dummy accounts (such as antawn, chynna, or kiki) through wp-login.php, potentially achieving privilege escalation if any dummy account holds an elevated role. Exploitation requires that an administrator has previously created dummy users via the plugin's Tools page.

Severity

6.5 (Medium)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-119980"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-31T07:16:36Z",
    "severity": "MODERATE"
  },
  "details": "The UsersWP \u2013 Front-end login form, User Registration, User Profile \u0026 Members Directory plugin for WordPress is vulnerable to unauthorized account access via Use of Predictable Password in all versions up to, and including, 1.2.78 The vulnerability exists because `get_dummy_user_passowrd()` derives the shared password for all 25 built-in dummy user accounts as the first 15 characters of `substr(hash(\u0027SHA256\u0027, AUTH_KEY . site_url()), 0, 25)`, while the full 25-character value of that same hash is simultaneously embedded in the hidden `uwp_register_hash` field rendered on every registration form response \u2014 reachable without authentication via both the public `/register/` page and the `wp_ajax_nopriv_uwp_ajax_register_form` AJAX handler, even when user registration is disabled. This makes it possible for unauthenticated attackers to recover the dummy user password directly from a single HTTP request and use it to authenticate as any of the 25 built-in dummy accounts (such as antawn, chynna, or kiki) through `wp-login.php`, potentially achieving privilege escalation if any dummy account holds an elevated role. Exploitation requires that an administrator has previously created dummy users via the plugin\u0027s Tools page.",
  "id": "GHSA-8qfx-8gpq-wc4q",
  "modified": "2026-10-31T09:31:13Z",
  "published": "2026-10-31T09:31:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119980"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AyeCode/userswp/archive/refs/heads/master.zip"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-forms.php#L5244"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-templates.php#L850"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-tools.php#L606"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-userswp.php#L565"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3774438/userswp/trunk/includes/class-tools.php"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7c458034-9c44-4b46-8845-4c05bea043a0?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-119980 (GCVE-0-2026-119980)

Vulnerability from cvelistv5 – Published: 2026-10-31 06:44 – Updated: 2026-11-02 17:55

Title

UsersWP <= 1.2.78 - Unauthenticated Account Access via Predictable Dummy User Password Disclosed through Registration Form Hash

Summary

The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress is vulnerable to unauthorized account access via Use of Predictable Password in all versions up to, and including, 1.2.78 The vulnerability exists because `get_dummy_user_passowrd()` derives the shared password for all 25 built-in dummy user accounts as the first 15 characters of `substr(hash('SHA256', AUTH_KEY . site_url()), 0, 25)`, while the full 25-character value of that same hash is simultaneously embedded in the hidden `uwp_register_hash` field rendered on every registration form response — reachable without authentication via both the public `/register/` page and the `wp_ajax_nopriv_uwp_ajax_register_form` AJAX handler, even when user registration is disabled. This makes it possible for unauthenticated attackers to recover the dummy user password directly from a single HTTP request and use it to authenticate as any of the 25 built-in dummy accounts (such as antawn, chynna, or kiki) through `wp-login.php`, potentially achieving privilege escalation if any dummy account holds an elevated role. Exploitation requires that an administrator has previously created dummy users via the plugin's Tools page.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-02 17:12 UTC

CWE

CWE-287 - Improper Authentication

Assigner

Wordfence CNA under the mitre root

CNA scorecard C 65/100 over 2364 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/usersw…
https://plugins.trac.wordpress.org/browser/usersw…
https://plugins.trac.wordpress.org/browser/usersw…
https://plugins.trac.wordpress.org/browser/usersw…
https://github.com/AyeCode/userswp/archive/refs/h…
https://plugins.trac.wordpress.org/changeset/3774…

Impacted products

1 product

Vendor	Product	Version
stiofansisland	UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP	Affected: 0 , ≤ 1.2.78 (semver)

Credits

Kuba

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-119980",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-02T17:12:46.446962Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-02T17:55:58.239Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "UsersWP \u2013 Front-end login form, User Registration, User Profile \u0026 Members Directory plugin for WP",
          "vendor": "stiofansisland",
          "versions": [
            {
              "lessThanOrEqual": "1.2.78",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Kuba"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The UsersWP \u2013 Front-end login form, User Registration, User Profile \u0026 Members Directory plugin for WordPress is vulnerable to unauthorized account access via Use of Predictable Password in all versions up to, and including, 1.2.78 The vulnerability exists because `get_dummy_user_passowrd()` derives the shared password for all 25 built-in dummy user accounts as the first 15 characters of `substr(hash(\u0027SHA256\u0027, AUTH_KEY . site_url()), 0, 25)`, while the full 25-character value of that same hash is simultaneously embedded in the hidden `uwp_register_hash` field rendered on every registration form response \u2014 reachable without authentication via both the public `/register/` page and the `wp_ajax_nopriv_uwp_ajax_register_form` AJAX handler, even when user registration is disabled. This makes it possible for unauthenticated attackers to recover the dummy user password directly from a single HTTP request and use it to authenticate as any of the 25 built-in dummy accounts (such as antawn, chynna, or kiki) through `wp-login.php`, potentially achieving privilege escalation if any dummy account holds an elevated role. Exploitation requires that an administrator has previously created dummy users via the plugin\u0027s Tools page."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287 Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-31T06:44:19.791Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7c458034-9c44-4b46-8845-4c05bea043a0?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-tools.php#L606"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-templates.php#L850"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-forms.php#L5244"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-userswp.php#L565"
        },
        {
          "url": "https://github.com/AyeCode/userswp/archive/refs/heads/master.zip"
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          "url": "https://plugins.trac.wordpress.org/changeset/3774438/userswp/trunk/includes/class-tools.php"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-10-29T17:10:44.000Z",
          "value": "Vendor Notified"
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          "lang": "en",
          "time": "2026-10-30T17:58:07.000Z",
          "value": "Disclosed"
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      ],
      "title": "UsersWP \u003c= 1.2.78 - Unauthenticated Account Access via Predictable Dummy User Password Disclosed through Registration Form Hash"
    }
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  "cveMetadata": {
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    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-119980",
    "datePublished": "2026-10-31T06:44:19.791Z",
    "dateReserved": "2026-10-30T17:53:54.941Z",
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    "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

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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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