Arbitrary File Upload Vulnerability in PostGallery Plugin for WordPress
CVE-2025-13543

8.8HIGH

Key Information:

Vendor

WordPress
Status
Postgallery
Vendor
CVE Published:
4 December 2025

What is CVE-2025-13543?

The PostGallery plugin for WordPress is susceptible to arbitrary file uploads due to improper validation of file types in the 'PostGalleryUploader' class functions. Authenticated users with subscriber-level permissions or higher can exploit this flaw to upload malicious files to the server, potentially leading to remote code execution. This vulnerability affects all versions up to and including 1.12.5, posing a significant risk to website integrity and security.

Affected Version(s)

PostGallery * <= 1.12.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/postgallery/ta...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Moose Love
JSON
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CVE-2025-13543 : Arbitrary File Upload Vulnerability in PostGallery Plugin for WordPress