Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Remote admin-ajax reach (AV:N), no special conditions beyond a Subscriber account (AC:L, PR:L), no user interaction, and eval()-based RCE yields full C/I/A impact within the host (S:U).
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
The WP Ultimate CSV Importer - WordPress Import & Export for CSV, XML & Excel plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 8.0.1 via the 'MappedFields' parameter. This is due to missing capability checks on the AJAX handlers for install_addon, saveMappedFields, and StartImport, combined with the plugin nonce being exposed to any authenticated user who can load an admin page, allowing a Subscriber to install the Import WooCommerce add-on, persist attacker-controlled PHP expressions in the MappedFields parameter, and trigger evaluation via eval() in ImportHelpers::get_meta_values(). This makes it possible for authenticated attackers, with subscriber-level access and above, to execute code on the server.
Articles & Coverage 2
AnalysisAI
Authenticated remote code execution in the Smackcoders WP Ultimate CSV Importer WordPress plugin (versions up to and including 8.0.1) lets a low-privileged Subscriber run arbitrary PHP on the server. Missing capability checks on the install_addon, saveMappedFields, and StartImport AJAX handlers, plus a plugin nonce leaked to any authenticated admin-page viewer, let an attacker install the WooCommerce add-on, persist PHP expressions in the MappedFields parameter, and force their evaluation through eval() in ImportHelpers::get_meta_values(). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated account at Subscriber level or above (PR:L) on a site running WP Ultimate CSV Importer ≤ 8.0.1; the attacker must be able to load at least one admin page to obtain the exposed plugin nonce, then invoke the install_addon AJAX action to add the Import WooCommerce add-on, persist PHP via the MappedFields parameter through saveMappedFields, and trigger StartImport so ImportHelpers::get_meta_values() reaches eval(). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 8.8) indicates network-reachable, low-complexity exploitation requiring only low privileges and no user interaction, with full confidentiality, integrity, and availability impact - consistent with server-side RCE. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or obtains a Subscriber account on a WordPress site running the plugin, loads an admin page to harvest the exposed plugin nonce, and calls the unprotected install_addon AJAX action to install the Import WooCommerce add-on. They then submit crafted MappedFields data via saveMappedFields containing a malicious PHP expression and invoke StartImport, causing ImportHelpers::get_meta_values() to eval() the payload and execute arbitrary code on the server. … |
| Remediation | Upgrade the plugin to the fixed release above 8.0.1 as published by Smackcoders; the corrective code is in WordPress plugin changeset 3591135 (https://plugins.trac.wordpress.org/changeset/3591135/wp-ultimate-csv-importer), and administrators should confirm the exact patched tag on the plugin page and via the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/e89fc348-1146-4593-8bf5-127f783ab786) before deploying. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory WordPress installations using this plugin; disable the plugin immediately; audit and restrict subscriber user accounts. …
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-43129
GHSA-6rrc-q62j-9g2p