Podlove Podcast Publisher <= 4.5.3 - Authenticated (Contributor+) PHP Object Injection to Arbitrary File Deletion via 'unfurl_data' Parameter

8.8
Deserialization of Untrusted Data
CVE CVE-2026-16099
CVSS 8.8 (High)
Publicly Published August 15, 2026
Last Updated August 16, 2026
Researcher Wordfence PRISM - Wordfence

Description

The Podlove Podcast Publisher plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the create_link_item function in all versions up to, and including, 4.5.3. This makes it possible for authenticated attackers, with contributor-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). A viable POP chain exists within the plugin itself via Podlove\ImageCache\GenerationGuard, whose __destruct() method invokes wp_delete_file() with an attacker-controlled file path populated through unserialization.

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Vulnerability Details for Podlove Podcast Publisher

Software Type Plugin
Software Slug podlove-podcasting-plugin-for-wordpress (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.5.4, or a newer patched version
Affected Version
  • <= 4.5.3
Patched Version
  • 4.5.4

Recent vulnerabilities in Podlove Podcast Publisher

# Title CVE ID CVSS Researchers Date
1 Podlove Podcast Publisher <= 4.5.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'episode_contributor[..][..][comment]' Parameter CVE-2026-75966 6.4 Wordfence PRISM September 8, 2026
2 Podlove Podcast Publisher <= 4.5.4 - Unauthenticated Stored Cross-Site Scripting CVE-2026-66615 7.2 daroo August 19, 2026
3 Podlove Podcast Publisher < 4.5.3 - Cross-Site Request Forgery CVE-2026-13729 4.3 Ryan Fabella August 1, 2026
4 Podlove Podcast Publisher <= 4.5.1 - Unauthenticated Arbitrary File Upload via podlove_image_cache_url Parameter CVE-2026-13001 9.8 Talal Nasraddeen July 14, 2026
5 Podlove Podcast Publisher <= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2026-32448 6.4 zaim March 8, 2026
6 Podlove Podcast Publisher <= 4.2.6 - Unauthenticated Arbitrary File Upload CVE-2025-10147 9.8 Arkadiusz Hydzik September 22, 2025
7 Podlove Podcast Publisher <= 4.2.5 - Open Redirect CVE-2025-58204 6.1 Nguyen Xuan Chien August 27, 2025
8 Podlove Podcast Publisher <= 4.2.2 - Cross-Site Request Forgery via ajax_transcript_delete Function CVE-2025-1383 4.3 Abbas Mamoun March 5, 2025
9 Podlove Podcast Publisher <= 4.2.0 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2024-13730 4.4 Bob Matyas March 3, 2025
10 Podlove Podcast Publisher <= 4.1.23 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2024-13729 4.4 Krugov Artyom March 3, 2025

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