CVE-2026-25461

High

Published: 25 March 2026

Published

25 March 2026

Modified

24 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 0.0004 14.4th percentile

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

Summary

CVE-2026-25461 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 Spearphishing Link (T1566.002); ranked at the 14.4th 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-2026-25461 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the Listeo Core plugin (listeo-core) developed by purethemes for WordPress. This issue affects Listeo Core versions from n/a through 2.0.21, as published on 2026-03-25 with 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).

An unauthenticated attacker with network access can exploit this vulnerability by crafting malicious input that is reflected back in the web page generation process. Exploitation requires low complexity and user interaction, such as tricking a victim into clicking a malicious link or submitting tainted input. Successful attacks enable script execution in the victim's browser context with changed scope, resulting in low impacts to confidentiality, integrity, and availability, such as potential session hijacking or data theft.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/listeo-core/vulnerability/wordpress-listeo-core-plugin-2-0-21-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve documents this Reflected XSS vulnerability in the WordPress Listeo Core plugin up to version 2.0.21.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-15744

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in purethemes Listeo Core listeo-core allows Reflected XSS.This issue affects Listeo Core: from n/a through <= 2.0.21.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1566.002 Spearphishing Link Initial Access

Adversaries may send spearphishing emails with a malicious link in an attempt to gain access to victim systems.

attack.mitre.org →

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

T1539 Steal Web Session Cookie Credential Access

An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.

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?

Reflected XSS enables exploitation via crafted malicious links (T1566.002/T1204.001) that trigger arbitrary JavaScript execution (T1059.007) in the victim's browser, directly facilitating session hijacking and cookie theft (T1185/T1539).

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