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CVE-2026-13353 is an authenticated remote code execution vulnerability in the WP Ultimate CSV Importer – WordPress Import & Export for CSV, XML & Excel plugin for WordPress, affecting all versions up to and including 8.0.1. The flaw results from missing capability checks on the AJAX handlers responsible for addon installation and import workflow actions, specifically install_addon, saveMappedFields, and StartImport, combined with exposure of a plugin nonce to authenticated users able to load an admin page. An attacker with subscriber-level access can abuse these conditions to install the Import WooCommerce add-on, store attacker-controlled PHP expressions in the MappedFields parameter, and trigger execution when the plugin evaluates that data through eval() in ImportHelpers::get_meta_values(). The issue is a code injection vulnerability that leads directly to server-side code execution.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.