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Privilege Escalation in WordPress Import and export users and customers Plugin

IdentifiersCVE-2026-3629CWE-269· Improper Privilege Management

CVE-2026-3629 is a privilege escalation vulnerability in the WordPress plugin Import and export users and customers affecting all versions up to and including 1.29.7. The flaw is caused by the save_extra_user_profile_fields function failing to properly restrict which user meta keys may be updated through profile fields. Specifically, the plugin's get_restricted_fields method does not block sensitive meta keys such as wp_capabilities. As a result, an attacker can submit a crafted registration request that sets wp_capabilities and thereby assign elevated privileges to the created account. Based on the provided information, exploitation is possible without authentication when the plugin is configured to expose profile fields and when a CSV containing a wp_capabilities column header has previously been imported.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an unauthenticated attacker to escalate privileges to Administrator within the affected WordPress site. This can lead to full compromise of the WordPress application, including arbitrary administrative actions, modification of site content and settings, creation of additional privileged accounts, access to sensitive data available to administrators, and potential follow-on code execution through normal WordPress administrative functionality such as plugin or theme management, depending on site configuration.

Mitigation

If you can’t patch tonight, do this now.

Until a patched version is deployed, disable the plugin feature that exposes profile fields via the "Show fields in profile" setting, and prevent any workflow that allows registration-time submission of imported custom fields. Review previously imported CSV schemas and remove or avoid sensitive headers such as wp_capabilities. Monitor for suspicious user registrations and newly created administrator accounts, and audit usermeta values for unauthorized wp_capabilities assignments.

Remediation

Patch, then assume compromise.

Update the Import and export users and customers plugin to a version newer than 1.29.7 that addresses the improper restriction of sensitive user meta fields. The fix should ensure that privileged meta keys, including wp_capabilities, cannot be set through user-controlled profile or registration inputs unless explicitly authorized by trusted administrative workflows.
PUBLIC EXPLOITS

Exploits

No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.

VALID 0 / 1 TOTALView more in app

All candidate exploits were filtered out by Mallory's validation.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
CodectionImport And Export Users And Customersapplication

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What this page doesn’t show

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Exposure mapping

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Threat actor evidence

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Associated malware

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Detection signatures

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Vendor-by-vendor mapping

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Social activity8

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