CVE-2025-23551

High

Published: 21 January 2025

Published

21 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 0.0021 43.0th percentile

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

Summary

CVE-2025-23551 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 Malicious Link (T1204.001); ranked at the 43.0th 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-2025-23551 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the razvypp SexBundle WordPress plugin (also referred to as sexbundle). This issue affects SexBundle versions from n/a through 1.4 inclusive.

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 network accessibility, low attack complexity, no required privileges, and user interaction (such as following a malicious link). Remote attackers can exploit it to inject and execute arbitrary scripts in a victim's browser, achieving low impacts on confidentiality, integrity, and availability within a changed security scope.

Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/sexbundle/vulnerability/wordpress-sexbundle-plugin-1-4-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve, which covers the Reflected XSS in the WordPress SexBundle plugin up to version 1.4.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-3244

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in razvypp SexBundle sexbundle allows Reflected XSS.This issue affects SexBundle: from n/a through <= 1.4.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1204.001 Malicious Link Execution

An adversary may rely upon a user clicking a malicious link in order to gain execution.

attack.mitre.org →

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

Why these techniques?

Reflected XSS vulnerability enables crafting of malicious links that trigger injection and execution of arbitrary JavaScript in the victim's browser upon user interaction.

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