CVE-2025-11827
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-22

Last updated on: 2025-10-22

Assigner: Wordfence

Description
The Oboxmedia Ads plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'before_widget' and 'after_widget' parameters of the oboxads-ad-widget shortcode in all versions up to, and including, 1.9.8. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-10-22
Last Modified
2025-10-22
Generated
2026-06-16
AI Q&A
2025-10-22
EPSS Evaluated
2026-06-14
NVD
CVE-2025-11827
EUVD
EUVD-2025-35321
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
oboxgroup oboxmedia_ads 1.9.8
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
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 Quick Actions
Instant insights powered by AI
Executive Summary

CVE-2025-11827 is a Stored Cross-Site Scripting (XSS) vulnerability in the Oboxmedia Ads WordPress plugin (version 1.9.8 and earlier). It occurs because the plugin does not properly sanitize and escape input parameters 'before_widget' and 'after_widget' in the oboxads-ad-widget shortcode. This allows authenticated users with contributor-level access or higher to inject malicious JavaScript code into pages. When other users visit these pages, the injected scripts execute in their browsers, potentially compromising their security. [3]

Impact Analysis

This vulnerability can allow attackers with contributor-level access or higher to inject arbitrary JavaScript into your WordPress site. This can lead to unauthorized actions such as stealing user session cookies, defacing the website, redirecting users to malicious sites, or performing actions on behalf of other users without their consent. It compromises the integrity and security of your website and its visitors.

Detection Guidance

This vulnerability can be detected by checking for the presence of the oboxads-ad-widget shortcode with manipulated 'before_widget' and 'after_widget' parameters in WordPress pages or posts, especially if you have contributor-level access or higher. Since the vulnerability involves Stored Cross-Site Scripting (XSS), you can look for injected scripts in the rendered HTML of pages using this widget. There are no specific commands provided in the resources, but you can manually inspect the page source or use tools like curl or wget to fetch pages and grep for suspicious script tags within widget areas. Additionally, reviewing the WordPress database for shortcode usage with suspicious parameters may help detect exploitation attempts. [3]

Mitigation Strategies

Immediate mitigation steps include removing or disabling the Oboxmedia Ads plugin version 1.9.8 from your WordPress installation, as it has been temporarily closed and removed from download availability pending a security review. Restrict contributor-level and higher user permissions to prevent unauthorized shortcode injection. Monitor and sanitize any existing widget shortcode parameters in your content to remove potentially malicious scripts. Applying updates or patches once available is also recommended. [2, 3]

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-11827. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart