CVE-2025-23663

High

Published: 03 March 2025

Published

03 March 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 0.0035 57.6th percentile

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

Summary

CVE-2025-23663 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 in the top 42.4% of CVEs by exploit likelihood; 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-2025-23663 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 Contexto WordPress plugin developed by Adrian Vaquez, with the issue present in all versions from n/a through 1.0 inclusive. The vulnerability was published on 2025-03-03 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).

Attackers can exploit this vulnerability remotely over the network with low attack complexity and no required privileges, though it demands user interaction such as clicking a specially crafted malicious link. Upon successful exploitation, the reflected XSS allows script execution in the context of the affected web page with a changed scope, resulting in low impacts to confidentiality, integrity, and availability, such as potential session hijacking or data exfiltration in the victim's browser.

The Patchstack advisory documents this reflected XSS vulnerability specifically in the WordPress Contexto plugin version 1.0.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-5693

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Adrian Vaquez Contexto contexto allows Reflected XSS.This issue affects Contexto: from n/a through <= 1.0.

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 reflected XSS vulnerability in a public-facing WordPress plugin directly maps to exploitation of public-facing applications, allowing remote attackers to inject and execute scripts via crafted links.

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