stiofansisland UsersWP Plugin up to 1.2.78 on WordPress Dummy User Password Generation wp-login.php get_dummy_user_passowrd improper authorization

Summaryinfo

A vulnerability marked as critical has been reported in stiofansisland UsersWP Plugin up to 1.2.78. Impacted is the function get_dummy_user_passowrd of the file wp-login.php of the component Dummy User Password Generation. Performing a manipulation results in improper authorization. This vulnerability is cataloged as CVE-2026-119980. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in stiofansisland UsersWP Plugin up to 1.2.78. This affects the function get_dummy_user_passowrd of the file wp-login.php of the component Dummy User Password Generation. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-119980 since 10/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/31/2026). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

By approaching the search of inurl:wp-login.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• stiofansisland

Name

• UsersWP Plugin

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9
• 1.2.10
• 1.2.11
• 1.2.12
• 1.2.13
• 1.2.14
• 1.2.15
• 1.2.16
• 1.2.17
• 1.2.18
• 1.2.19
• 1.2.20
• 1.2.21
• 1.2.22
• 1.2.23
• 1.2.24
• 1.2.25
• 1.2.26
• 1.2.27
• 1.2.28
• 1.2.29
• 1.2.30
• 1.2.31
• 1.2.32
• 1.2.33
• 1.2.34
• 1.2.35
• 1.2.36
• 1.2.37
• 1.2.38
• 1.2.39
• 1.2.40
• 1.2.41
• 1.2.42
• 1.2.43
• 1.2.44
• 1.2.45
• 1.2.46
• 1.2.47
• 1.2.48
• 1.2.49
• 1.2.50
• 1.2.51
• 1.2.52
• 1.2.53
• 1.2.54
• 1.2.55
• 1.2.56
• 1.2.57
• 1.2.58
• 1.2.59
• 1.2.60
• 1.2.61
• 1.2.62
• 1.2.63
• 1.2.64
• 1.2.65
• 1.2.66
• 1.2.67
• 1.2.68
• 1.2.69
• 1.2.70
• 1.2.71
• 1.2.72
• 1.2.73
• 1.2.74
• 1.2.75
• 1.2.76
• 1.2.77
• 1.2.78

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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