# CVE-2026-119980: UsersWP <= 1.2.78 - Unauthenticated Account Access via Predictable Dummy User Password Disclosed through Registration Form Hash

Status: published. Published: 2026-10-31. Updated: 2026-11-02.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- stiofansisland / UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP: ≥ 0; ≤ 1.2.78 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N; source: CNA: Wordfence

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N; source: NVD: security@wordfence.com

- CISA KEV: No listing in collected sources

- EPSS: 0.26% as of 2026-11-02; percentile 18.15%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-287

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/7c458034-9c44-4b46-8845-4c05bea043a0?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-tools.php#L606 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-templates.php#L850 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-forms.php#L5244 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-userswp.php#L565 (CNA: Wordfence)

- https://github.com/AyeCode/userswp/archive/refs/heads/master.zip (CNA: Wordfence)

- https://plugins.trac.wordpress.org/changeset/3774438/userswp/trunk/includes/class-tools.php (CNA: Wordfence)

- https://github.com/AyeCode/userswp/archive/refs/heads/master.zip (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-forms.php#L5244 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-templates.php#L850 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-tools.php#L606 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.78/includes/class-userswp.php#L565 (security@wordfence.com)

- https://plugins.trac.wordpress.org/changeset/3774438/userswp/trunk/includes/class-tools.php (security@wordfence.com)

- https://www.wordfence.com/threat-intel/vulnerabilities/id/7c458034-9c44-4b46-8845-4c05bea043a0?source=cve (security@wordfence.com)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-119980; retrieved 2026-11-02; source updated 2026-11-02

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119980; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119980; retrieved 2026-11-02; source updated Not reported

Revision: 961ae845596523bd3efc6680b418939f5b2578870fc944480cb907855cf593ce

Canonical: https://y2.dev/cve/CVE-2026-119980

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