CVE-2025-28935
Published: 26 March 2025
Summary
CVE-2025-28935 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 43.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Filters information outputs to neutralize malicious scripts before rendering in web pages, directly preventing reflected XSS execution in the Fancybox Plus plugin.
Validates reflected user inputs to ensure they are within expected formats, blocking malicious payloads targeting the improper neutralization flaw in Fancybox Plus.
Mandates timely identification, reporting, and patching of the specific XSS flaw affecting Fancybox Plus versions through 1.0.1.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS in public-facing WordPress plugin directly enables exploitation of the web application (T1190) and arbitrary JavaScript execution in the browser (T1059.007).
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in puzich Fancybox Plus fancybox-plus allows Reflected XSS.This issue affects Fancybox Plus: from n/a through <= 1.0.1.
Deeper analysisAI
CVE-2025-28935 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the Fancybox Plus WordPress plugin (fancybox-plus component) developed by puzich. This issue impacts all versions from n/a through 1.0.1, as published on 2025-03-26.
The vulnerability carries a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating exploitation is possible over the network with low attack complexity, no required privileges, but necessitating user interaction such as clicking a malicious link. Remote attackers can deliver payloads via reflected inputs, enabling arbitrary script execution in the victim's browser context with changed scope, potentially compromising low levels of confidentiality, integrity, and availability, such as session hijacking or data theft.
The primary advisory from Patchstack (https://patchstack.com/database/Wordpress/Plugin/fancybox-plus/vulnerability/wordpress-fancybox-plus-plugin-1-0-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve) documents the Reflected XSS in Fancybox Plus version 1.0.1 for WordPress, providing details on the issue for practitioners to review mitigation guidance and available patches.
Details
- CWE(s)