CVE-2026-76548 User Profile Builder CVE debrief

Who should care

WordPress site administrators and owners using the User Profile Builder plugin should be aware of this vulnerability and take immediate action to update the plugin and restrict access to sensitive content. They should also verify plugin versions, monitor for suspicious activity, and restrict access to media libraries and unpublished content to prevent unauthorized modifications. Additionally, they should review compensating controls for exposed systems while remediation is scheduled and verified, and track exceptions and retest remediated assets to ensure the vulnerability is properly addressed. This vulnerability impacts operators who manage WordPress sites with the User Profile Builder plugin, as well as security teams responsible for vulnerability management and incident response. Platform administrators and security personnel should also be aware of the potential impact on their systems and take steps to mitigate the vulnerability. The vulnerability management process should include reviewing and updating the plugin, as well as monitoring for potential security incidents related to this vulnerability. Asset inventory and rollback/change windows should also be considered to minimize potential disruptions. Source tracking and exposure review are also essential to ensure that the vulnerability is properly addressed and that there are no other affected systems. Compensating controls, such as monitoring and detection, should be implemented to identify potential security incidents related to this vulnerability. Overall, a comprehensive approach to vulnerability management is necessary to address this issue effectively. The vulnerability affects a wide range of stakeholders, including site administrators, security teams, and platform operators, and requires a coordinated effort to mitigate its impact. By prioritizing the update and implementing compensating controls, organizations can minimize the risk associated with this vulnerability and protect their systems from potential attacks. The vulnerability also highlights the importance of maintaining up-to-date software and plugins to prevent security incidents. Furthermore, it emphasizes the need for proactive and a

Technical summary

The User Profile Builder WordPress plugin before 4.0.1 does not properly restrict its front-end file upload feature, granting unauthenticated visitors capabilities reserved to privileged roles. This allows them to list the site's media library and to modify unpublished posts, pages and media items belonging to other users. The vulnerability enables unauthorized access to sensitive content and modifications without proper authentication. Affected site administrators should prioritize updating the plugin to version 4.0.1 or later to prevent unauthorized file uploads and modifications.

Defensive priority

WordPress site administrators and owners should prioritize updating the User Profile Builder plugin to version 4.0.1 or later to prevent unauthorized file uploads and modifications.

Recommended defensive actions

• Update the User Profile Builder plugin to version 4.0.1 or later
• Verify plugin version and configuration
• Monitor for suspicious file uploads and modifications
• Restrict access to media library and unpublished content
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The User Profile Builder WordPress plugin before 4.0.1 does not properly restrict its front-end file upload feature, granting unauthenticated visitors capabilities reserved to privileged roles. This allows them to list the site's media library and to modify unpublished posts, pages and media items belonging to other users. Evidence is limited; further verification is recommended.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.