CVE-2025-23634

High

Published: 23 January 2025

Published

23 January 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 0.0018 39.1th percentile

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

Summary

CVE-2025-23634 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 39.1th 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-2025-23634 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, affecting the WordPress plugin "Youtube Video Grid," also known as "youmax-channel-embeds-for-youtube-businesses." The issue resides in the codehandling component and impacts all versions from n/a through 1.9 inclusive. Published on 2025-01-23, it 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 high severity due to its network accessibility and scope change.

Attackers can exploit this vulnerability remotely over the network with low complexity and no privileges required, but it necessitates user interaction, such as visiting a maliciously crafted URL reflected in the plugin's output. Exploitation enables limited impacts on confidentiality, integrity, and availability within a changed scope, typically allowing script execution in the context of the targeted user's browser session.

The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/youmax-channel-embeds-for-youtube-businesses/vulnerability/wordpress-youtube-video-grid-plugin-1-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve) documents the Reflected XSS in the Youtube Video Grid plugin up to version 1.9, providing details for WordPress administrators to assess and address the issue through plugin updates or removal.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-3301

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in codehandling Youtube Video Grid youmax-channel-embeds-for-youtube-businesses allows Reflected XSS.This issue affects Youtube Video Grid: from n/a through <= 1.9.

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 →

Why these techniques?

The CVE describes a reflected XSS vulnerability in a publicly accessible WordPress plugin, directly enabling remote exploitation of a public-facing web application via crafted URLs.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1