UsersWP <= 1.2.58 - Authenticated (Subscriber+) Restricted Usermeta Modification via 'htmlvar' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress is vulnerable to Improper Access Control in all versions up to, and including, 1.2.58 This is due to insufficient field-level permission validation in the upload_file_remove() AJAX handler where the $htmlvar parameter is not validated against a whitelist of allowed fields or checked against the field's for_admin_use property. This makes it possible for authenticated attackers, with subscriber-level access and above, to clear or reset any restricted usermeta column for their own user record, including fields marked as "For admin use only", bypassing intended field-level access restrictions.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| stiofansisland | UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP | up to 1.2.58 | — | No fix listed | CNA |
- UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP Vendorstiofansisland Affected up to 1.2.58 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4977
- 2026-10-03 Alias added: GHSA-72hv-q97x-rw7p
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/efee685c-e2cd-471b-aea9-607124df6006?source=cve
- https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2274
- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2274
- https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2251
- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2251
- https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-meta.php#L165
- https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-meta.php#L165
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fuserswp/tags/1.2.58&new_path=%2Fuserswp/tags/1.2.59
More stiofansisland vulnerabilities
- TI-2026-11418 UsersWP <= 1.2.65 - Authenticated (Subscriber+) Arbitrary File Deletion via File Upload Field CVSS 3.1HIGH 8.8
- TI-2026-10027 Events Calendar for GeoDirectory <= 2.3.28 - Authenticated (Subscriber+) Privilege Escalation CVSS 3.1HIGH 8.8
- TI-2025-09182 SQL injection in stiofansisland UsersWP – Front-end login form, User Registration, User… CVSS 3.1MEDIUM 6.5
- TI-2026-16210 UsersWP <= 1.2.70 - Authenticated (Subscriber+) Arbitrary File Deletion CVSS 3.1HIGH 8.1
- TI-2026-83502 Predictable password in UsersWP lets attackers access dummy accounts CVSS 3.1MEDIUM 6.5
- TI-2026-14436 Payment forms, Buy now buttons, and Invoicing System | GetPaid <= 2.8.56 - Authenticated… CVSS 3.1MEDIUM 6.6
Sources
- CVE-2026-4977 · CVE Program
- CVE-2026-4977 · NVD
- FIRST EPSS
- GHSA-72hv-q97x-rw7p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences