CVE-2025-15440

High

Published: 11 February 2026

Published

11 February 2026

Modified

15 April 2026

KEV Added

—

Patch

—

CVSS Score 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS Score 0.0012 29.9th percentile

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

Summary

CVE-2025-15440 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Wordpress (inferred from references). Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 29.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 2 other techniques.

Threat & Defense Details

Likely Mitigating ControlsAI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing

addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation

addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering

addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

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 →

T1185 Browser Session Hijacking Collection

Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.

attack.mitre.org →

Why these techniques?

Stored XSS in public-facing WordPress plugin directly enables exploitation of the web application (T1190) and arbitrary JavaScript execution in victim browsers (T1059.007), which facilitates session hijacking (T1185).

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

NVD Description

The iONE360 configurator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Contact Form Parameters in all versions up to, and including, 2.0.57 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers…

to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Deeper analysisAI

CVE-2025-15440 is a stored cross-site scripting (XSS) vulnerability, classified under CWE-79, affecting the iONE360 configurator plugin for WordPress in all versions up to and including 2.0.57. The issue stems from insufficient input sanitization and output escaping in the Contact Form Parameters, enabling the injection of arbitrary web scripts into pages. Published on 2026-02-11, it carries a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N).

Unauthenticated attackers can exploit this vulnerability over the network with low attack complexity and no privileges or user interaction required. By submitting malicious payloads via the Contact Form Parameters, they can store scripts on the server that execute in users' browsers whenever an affected page is accessed, potentially compromising session data or performing actions on behalf of the victim within the site's scope.

The provided references link to lines 50, 53, 56, 59, and 60 in the file admin/partials/configurator-ione360-admin-contact-form.php from plugin version 2.0.57, highlighting the specific code locations where input handling and output rendering lack proper sanitization and escaping. No explicit patch or mitigation details are detailed in the available information.