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WP Ultimate CSV Importer CVE-2026-13353

| EUVDEUVD-2026-43129 HIGH
Code Injection (CWE-94)
2026-07-11 Wordfence GHSA-6rrc-q62j-9g2p
8.8
CVSS 3.1 · Vendor: Wordfence
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Severity by source

Vendor (Wordfence) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

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).

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 11, 2026 - 03:47 vuln.today
CVE Published
Jul 11, 2026 - 02:31 cve.org
HIGH 8.8

DescriptionCVE.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.

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

Access
Register or obtain Subscriber account
Delivery
Load admin page, harvest plugin nonce
Exploit
Call install_addon to add WooCommerce add-on
Execution
Persist PHP payload via MappedFields (saveMappedFields)
Persist
Trigger StartImport reaching eval()
Impact
Execute arbitrary PHP as web server

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. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-13353 vulnerability details – vuln.today

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