EUVD-2026-86596
GHSA-p4qp-82cp-cc5h
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Network-reachable stored XSS with subscriber auth (PR:L); UI:R because a privileged admin must open the victim's Edit User screen; S:C and C:L/I:L as payload executes in the admin's context.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
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 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. This is exploitable via a nonce-free GET request to /wp-admin/profile.php, requiring no profile-form submission; a Subscriber can plant the malicious attachment URL, which then executes when an administrator opens that user's Edit User screen.
AnalysisAI
Stored cross-site scripting in the WordPress plugin User Profile Builder (Profile Builder by Cozmoslabs) through version 4.0.2 lets any authenticated user with Subscriber-level access plant script content in their avatar value and have it execute in a higher-privileged user's browser. The distinguishing enabler is a nonce-free GET request to /wp-admin/profile.php that writes a malicious attachment URL as the avatar without any profile-form submission or valid nonce, so a Subscriber only needs to reach that endpoint to seed the payload. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated account with at least Subscriber-level access (PR:L) on a WordPress site running User Profile Builder <=4.0.2 with the Avatar field feature in use. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a legitimate but modest-severity finding. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-tagged fixed release is independently confirmed in the supplied data; the available fix signal is the upstream WordPress.org changeset https://plugins.trac.wordpress.org/changeset/3708665/profile-builder, so treat this as an upstream fix available (commit/changeset) and verify the plugin's changelog for the first release that ships it before relying on an upgrade version number. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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