Cyber Posture

CVE-2025-26566

High

Published: 26 March 2025

Published
26 March 2025
Modified
23 April 2026
KEV Added
Patch
CVSS Score 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
EPSS Score 0.0019 40.5th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Description

Adversaries may abuse various implementations of JavaScript for execution.

Security Summary

CVE-2025-26566 is an Improper Neutralization of Input During Web Page Generation vulnerability, enabling Reflected Cross-Site Scripting (XSS) as classified under CWE-79. It affects the In Stock Mailer for WooCommerce WordPress plugin (in-stock-mailer-for-woocommerce) in all versions up to and including 2.1.1. 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 high severity due to its network accessibility, low attack complexity, and lack of required privileges.

Attackers can exploit this vulnerability remotely without authentication by crafting malicious inputs or links that, when interacted with by a user (such as clicking a link), reflect and execute arbitrary JavaScript in the victim's browser context. This requires user interaction but changes scope, potentially allowing limited impacts like theft of session cookies, keystroke logging, or minor page modifications within the plugin's affected pages.

The Patchstack advisory provides further details on the vulnerability and mitigation, available at https://patchstack.com/database/Wordpress/Plugin/in-stock-mailer-for-woocommerce/vulnerability/wordpress-in-stock-mailer-for-woocommerce-plugin-2-1-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve.

Details

CWE(s)
CWE-79

MITRE ATT&CK Enterprise Techniques

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.
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
Why these techniques?

The CVE describes a reflected XSS vulnerability in a public-facing WordPress plugin, directly enabling exploitation of public-facing applications (T1190) and arbitrary JavaScript execution via crafted inputs/links (T1059.007).

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

References