WordPress security changelog
HIGH CVE-2026-13430 Deferred

Post Export Import with Media: Dangerous file upload

Post Export Import with Media is affected by dangerous file upload. Exploitation requires at least administrator-level access. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise. The published affected range is <= 1.13.1.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Post Export Import with Media
Plugin slug
post-export-import-with-media
Affected
<= 1.13.1
Safe version
> 1.13.1
Published
Jul 10, 2026
Weakness
CWE-434 — Unrestricted Upload of File with Dangerous Type

This CVE was published Jul 10, 2026 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

Update Post Export Import with Media to a release after 1.13.1, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources