Stored cross-site scripting in User Profile Builder WordPress plugin
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Cozmoslabs User Profile Builder for WordPress is affected in all versions up to and including 4.0.3. Insufficient sanitization and escaping of the display_name parameter allow stored cross-site scripting (CWE-79). An authenticated attacker with subscriber-level access or above can inject scripts that run when users open an injected page. The payload persists in wp_comments.comment_author even after the display name is changed or removed.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name' parameter in all versions up to, and including, 4.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload persists in wp_comments.comment_author independently of the user account, so removing or changing the attacker's display name after the comment is posted does not neutralize the stored script.
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 |
|---|---|---|---|---|---|
| Cozmoslabs | User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor | up to 4.0.3 | — | No fix listed | CNA |
- User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor VendorCozmoslabs Affected up to 4.0.3 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cozmoslabs:profile_builder:*:*:*:*:*:*:*:* | — | — | Cozmoslabs |
- cpe:2.3:a:cozmoslabs:profile_builder:*:*:*:*:*:*:*:* Versions — — ·Cozmoslabs
Remediation
The sources list no fixed version for User Profile Builder.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-16 Threatist record created from CVE-2026-107748
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-16 Priority changed: MEDIUM → LOW
- 2026-10-16 Alias added: GHSA-q4wg-8pfx-jfgq
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2f466add-992b-46c7-a1cc-5c05d59f4bdf?source=cve
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php#L582
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php#L585
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php#L593
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/default-fields/display-name/display-name.php#L81
- https://plugins.trac.wordpress.org/changeset/3741133/profile-builder
- https://plugins.trac.wordpress.org/changeset/3741133/profile-builder/trunk/features/functions.php
More Cozmoslabs vulnerabilities
- TI-2024-06204 profile-builder <= 3.11.8 - Unauthenticated Privilege Escalation CVSS 3.1CRITICAL 9.8
- TI-2024-05908 User Profile Builder < 3.11.8 - Unauthenticated Media Upload CVSS 3.1CRITICAL 9.1
- TI-2026-56948 Cozmoslabs Profile Builder Plugin Avatar Simple Upload AJAX admin-ajax.php wppb_ajax_simple_avatar unrestricted upload CVSS 4.0MEDIUM 6.9
- TI-2026-15943 TranslatePress – Multilingual <= 3.3.1 - Unauthenticated Account Takeover via Password Reset Link Disclosure CVSS 3.1CRITICAL 9.8
- TI-2026-13308 Incorrect type conversion in Cozmoslabs User Profile Builder – Beautiful User… CVSS 3.1CRITICAL 9.8
- TI-2024-06217 Profile Builder <= 3.12.0 - Admin+ Stored Cross Site Scripting CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-107748 · CVE Program
- CVE-2026-107748 · NVD
- FIRST EPSS
- GHSA-q4wg-8pfx-jfgq · 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