Post Export Import with Media <= 1.13.1 - Authenticated (Administrator+) Arbitrary File Upload via Trailing-Dot Filename Bypass in ZIP Media Import
| CVE | CVE-2026-13430 |
|---|---|
| CVSS | 7.2 (High) |
| Publicly Published | July 9, 2026 |
| Last Updated | July 10, 2026 |
| Researchers |
Chloe Chamberland
- Wordfence
Wordfence PRISM - Wordfence |
Description
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.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Post Export Import with Media
| Software Type | Plugin |
|---|---|
| Software Slug | post-export-import-with-media (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.13.2, or a newer patched version |
| Affected Version |
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| Patched Version |
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