CVE-2026-13430
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk45th percentile - higher than 45% of all known CVEs
Summary
The Post Export Import with Media plugin for WordPress up to version 1.13.1 is vulnerable to arbitrary file upload. The issue is caused by insufficient file extension validation in the import_media_file_secure function, where the extension allow-list can be bypassed by appending a trailing dot to the filename in a ZIP archive.
Risk Assessment
An authenticated attacker with administrator-level access can upload an executable file to the WordPress uploads directory, leading to remote code execution and full server compromise.
Recommendation
Immediately update the Post Export Import with Media plugin to the latest available version. If an update is not possible, consider temporarily disabling the plugin until a patch is released.
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Original NVD description (English source)
The Post Export Import with Media plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.13.1 via the import_media_file_secure function. This is due to insufficient file extension validation caused by a trailing-dot filename bypass, where the extension allow-list check in ajax_import_media_start() uses pathinfo() on the raw ZIP entry name (e.g., 'shell.php.'), which returns an empty string for the extension, causing the allow-list guard to be skipped and the file to be extracted to a temporary location, after which import_media_file_secure() copies it into the WordPress uploads directory without re-validating the extension. This makes it possible for authenticated attackers, with administrator-level access and above, to upload files that may be executable, which makes remote code execution possible.