CVE-2025-48360
BaseFortify
Publication date: 2025-08-28
Last updated on: 2026-04-23
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| patchstack | wordpress_varnish_nginx_proxy_caching | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the WordPress Varnish/Nginx Proxy Caching plugin up to version 1.8.3. It allows an attacker with administrator privileges to inject malicious scripts, such as redirects, advertisements, or other HTML payloads, into the website. These scripts execute when visitors access the site, potentially compromising user interactions and security. [1]
How can this vulnerability impact me? :
The vulnerability can impact you by allowing attackers with admin access to inject malicious scripts into your website. These scripts can execute in the browsers of your visitors, leading to unauthorized redirects, display of unwanted advertisements, or other malicious actions. This can harm your website's reputation, compromise user data, and potentially lead to further security breaches. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection of this vulnerability involves checking if the WordPress Varnish/Nginx Proxy Caching plugin version 1.8.3 or earlier is installed and active. Since the vulnerability allows an attacker with administrator privileges to inject malicious scripts, signs of stored XSS payloads in web pages or unusual script injections could indicate exploitation. However, plugin-based malware scanners may be unreliable. No specific commands are provided for detection in the available resources. [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include removing and replacing the vulnerable Varnish/Nginx Proxy Caching plugin with an alternative solution, as no official fix or updated version is available. Applying a virtual patch (vPatch) provided by Patchstack can also auto-mitigate the vulnerability without requiring an official patch. Deactivating the plugin alone does not eliminate the risk. Consider professional incident response services if compromise is suspected. [1]