CVE-2026-95866 json
User Profile Builder <= 4.0.2 - Unauthenticated Stored Cross-Site Scripting via Avatar Field
published last mo. modified last mo. also EUVD-2026-86598
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Avatar Field in all versions up to, and including, 4.0.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The zero-length multipart file branch in wppb_save_avatar_value() writes the raw request value directly to user meta, bypassing the wppb_save_attachment_id()/wppb_verify_attachment_id() validation path; the stored payload is later adopted as a WordPress attachment URL and rendered unescaped by wppb_default_fields_make_upload_button() when an administrator views the affected account.
Is CVE-2026-95866 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/68cef86f-3a6a-47c4-a092-de3bb40ac157?source=cve
- plugins.trac.wordpress.org /browser/profile-builder/tags/4.0.2/front-end/default-fields/upload/upload_helper_functions.php#L286
- plugins.trac.wordpress.org /browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L127
- plugins.trac.wordpress.org /browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L67
- plugins.trac.wordpress.org /changeset?reponame=&old=3708665%40profile-builder&new=3708665%40profile-builder
Sources
- CVE List CVE-2026-95866
- NVD CVE-2026-95866
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.