CVE-2025-25158
Published: 03 March 2025
Summary
CVE-2025-25158 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 46.2th 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).
Deeper analysis
CVE-2025-25158 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Uncomplicated SEO WordPress plugin developed by Antonio Sanchez. This issue affects all versions of Uncomplicated SEO from n/a through 1.2 inclusive. The vulnerability was published on 2025-03-03 and 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).
Attackers can exploit this vulnerability remotely over the network with low attack complexity and no required privileges, though it demands user interaction such as clicking a malicious link. Upon successful exploitation, adversaries gain changed scope privileges, enabling low-level impacts on confidentiality, integrity, and availability, potentially allowing theft of user session data or execution of scripts in the victim's browser context.
The primary advisory from Patchstack, available at https://patchstack.com/database/Wordpress/Plugin/uncomplicated-seo/vulnerability/wordpress-uncomplicated-seo-plugin-1-2-cross-site-scripting-xss-vulnerability?_s_id=cve, documents the Reflected XSS vulnerability specific to Uncomplicated SEO plugin version 1.2 in WordPress environments. Security practitioners should consult this reference for detailed mitigation recommendations, including any available patches or workarounds.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-5642
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Antonio Sanchez Uncomplicated SEO uncomplicated-seo allows Reflected XSS.This issue affects Uncomplicated SEO: from n/a through <= 1.2.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS in public-facing WordPress plugin directly enables exploitation of web application (T1190) and arbitrary JavaScript execution in browser (T1059.007).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly addresses reflected XSS by requiring filtering of information outputs to neutralize untrusted input during web page generation in the Uncomplicated SEO plugin.
Validates inputs to the WordPress plugin to prevent injection of malicious scripts that could be reflected back to users.
Mandates timely remediation of the specific flaw in Uncomplicated SEO versions through <=1.2 by patching or removal to eliminate the XSS vulnerability.