CVE-2025-23851

High

Published: 14 February 2025

Published

14 February 2025

Modified

23 April 2026

KEV Added

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Patch

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CVSS Score v3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

EPSS Score 0.0013 32.1th percentile

Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-23851 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 32.1th 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-2025-23851 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the WordPress plugin Coronavirus (COVID-19) Outbreak Data Widgets by Khushwant Singh. The vulnerability affects all versions of the plugin up to and including 1.1.1. It was published on 2025-02-14 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).

The attack requires a remote, unauthenticated attacker to craft a malicious input that is reflected back in a web page, tricking a user into interacting with it, such as by visiting a specially crafted URL. Upon successful exploitation, the attacker can execute arbitrary scripts in the victim's browser context, potentially leading to low-level impacts on confidentiality, integrity, and availability, with a scope change that affects the site's users.

Mitigation details are documented in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/coronavirus-data-widgets/vulnerability/wordpress-coronavirus-covid-19-outbreak-data-widgets-plugin-1-1-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-3475

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Khushwant Singh Coronavirus (COVID-19) Outbreak Data Widgets coronavirus-data-widgets allows Reflected XSS.This issue affects Coronavirus (COVID-19) Outbreak Data Widgets: from n/a through <= 1.1.1.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

Why these techniques?

The vulnerability is a reflected XSS (CWE-79) in a public-facing WordPress plugin, directly enabling T1190 (Exploit Public-Facing Application) via crafted malicious input in URLs and facilitating T1059.007 (JavaScript) for arbitrary script execution in the victim's browser context.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0