CVE-2026-13353

HIGH

WP Ultimate CSV Importer <= 8.0.1 - Missing Authorization to Authenticated (Subscriber+) Remote Code Execution via 'MappedFields' Parameter

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-13353. PoCs published by incogbyte.

AI-analyzed exploit summary This exploit demonstrates a missing authorization vulnerability in WP Ultimate CSV Importer <= 8.0.1, where a Subscriber can forge AJAX requests to store malicious PHP expressions in mapping templates. These expressions execute via eval() when an Administrator processes an import, leading to remote code execution.

Description

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.

Exploits (1)

github WORKING POC 4 stars
by incogbyte · pythonpoc
https://github.com/incogbyte/wp-cve-exploits/tree/main/CVE-2026-13353

This exploit demonstrates a missing authorization vulnerability in WP Ultimate CSV Importer <= 8.0.1, where a Subscriber can forge AJAX requests to store malicious PHP expressions in mapping templates. These expressions execute via eval() when an Administrator processes an import, leading to remote code execution.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: WP Ultimate CSV Importer <= 8.0.1
Auth required
Prerequisites: Valid Subscriber credentials · A valid nonce for the 'smack-ultimate-csv-importer' action (computed or disclosed) · An Administrator session to trigger the stored payload
mistral-large-3 · analyzed Jul 16, 2026 Full analysis →

Scores

CVSS v3 8.8
EPSS 0.0062
EPSS Percentile 46.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-94
Status published
Products (1)
smackcoders/WP Ultimate CSV Importer – WordPress Import & Export for CSV, XML & Excel < 8.0.1
Published Jul 11, 2026
Tracked Since Jul 11, 2026