CVE-2025-10147: 
WordPress vulnerability analysis and mitigation

The Podlove Podcast Publisher plugin for WordPress contains an arbitrary file upload vulnerability (CVE-2025-10147) discovered in versions up to and including 4.2.6. The vulnerability was disclosed on September 22, 2025, and is tracked with a CVSS v3.1 score of 9.8 (Critical). The issue affects the 'moveasoriginal_file' function due to missing file type validation, which could allow unauthenticated attackers to upload arbitrary files to affected WordPress sites (NVD).

The vulnerability stems from insufficient file type validation in the 'moveasoriginal_file' function within the plugin's image.php file. The issue is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type). It received a Critical CVSS v3.1 Base Score of 9.8 with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, and no required privileges or user interaction (NVD).

The vulnerability allows unauthenticated attackers to upload arbitrary files to the affected site's server, potentially enabling remote code execution. This could lead to complete system compromise with high impacts on confidentiality, integrity, and availability of the affected WordPress installation (NVD).

The vulnerability has been patched in version 4.2.7 of the Podlove Podcast Publisher plugin. The update includes improved handling of image files in the download cache to block malicious uploads. Users are strongly advised to update to version 4.2.7 immediately (WordPress Plugin Repository).