---
id: CVE-2026-13430
title: >-
  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
summary: >-
  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 c…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
published: '2026-07-10'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13430'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L268
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L364
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L389
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L444
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-export-import-with-media/tags/1.13.1/includes/class-media-handler.php#L789
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3600506%40post-export-import-with-media&new=3600506%40post-export-import-with-media
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/42f94f80-6157-4778-ad69-184943134fd2?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.01149
epssPercentile: 0.65436
ingestedAt: '2026-07-11T20:15:25.843Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.