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CVE-2026-16099— Podlove Podcast Publisher <= 4.5.3 - Authenticated (Contributor+) PHP Object Injection to Arbitrary File Deletion via 'unfurl_data' Parameter

Quick assessment

Affected
eteubert Podlove Podcast Publisher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Podlove Podcast Publisher是WordPress基金会的一款播客发布管理工具。 WordPress Podlove Podcast Publisher 4.5.3及之前版本存在反序列化注入漏洞，该漏洞源于create_link_item函数对文件路径验证不足，具有投稿者级别及以上权限的经过身份验证的攻击者可通过反序列化触发POP链删除服务器上的任意文件，进而可能导致远程代码执行。

CVSS 8.8 · High EPSS 1.10% · P64

Affected Version Matrix 1

VendorProduct Version RangeStatus
eteubert Podlove Podcast Publisher ≤ 4.5.3 affected
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I. Basic Information for CVE-2026-16099

Vulnerability Information
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Vulnerability Title
Podlove Podcast Publisher <= 4.5.3 - Authenticated (Contributor+) PHP Object Injection to Arbitrary File Deletion via 'unfurl_data' Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Podlove Podcast Publisher 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Podlove Podcast Publisher是WordPress基金会的一款播客发布管理工具。 WordPress Podlove Podcast Publisher 4.5.3及之前版本存在反序列化注入漏洞，该漏洞源于create_link_item函数对文件路径验证不足，具有投稿者级别及以上权限的经过身份验证的攻击者可通过反序列化触发POP链删除服务器上的任意文件，进而可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
eteubert Podlove Podcast Publisher 0 ~ 4.5.3 -

II. Public POCs for CVE-2026-16099

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III. Intelligence Information for CVE-2026-16099

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Patches & Fixes for CVE-2026-16099 (1)

Vendor Advisories for CVE-2026-16099 (1)

IV. Related Vulnerabilities

Same product: Podlove Podcast Publisher
Same vendor: eteubert
Same weakness: CWE-502

V. Comments for CVE-2026-16099

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