CVE-2025-23874

High

Published: 22 January 2025

Published

22 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 0.0023 46.2th percentile

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

Summary

CVE-2025-23874 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 at the 46.2th 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-15 (Information Output Filtering) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2025-23874 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the WP Block Pack plugin (wp-block-pack) developed by FalconTheme Team. This issue affects WP Block Pack versions from n/a through 1.1.6.

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 privileges required, and user interaction needed, with a changed scope leading to low impacts on confidentiality, integrity, and availability. Remote attackers can exploit it by crafting malicious input that reflects unsanitized on a web page, tricking authenticated or unauthenticated users into interacting with it, such as via a phishing link, to execute arbitrary scripts in the victim's browser context.

The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/wp-block-pack/vulnerability/wordpress-wp-block-pack-plugin-1-1-6-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve details this Reflected XSS in WP Block Pack 1.1.6 and provides vulnerability-specific guidance for practitioners.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-3495

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in FalconTheme Team WP Block Pack wp-block-pack allows Reflected XSS.This issue affects WP Block Pack: from n/a through <= 1.1.6.

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 →

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

Why these techniques?

Reflected XSS in public-facing WordPress plugin directly enables T1190 (exploit public-facing application) via crafted malicious input; facilitates T1059.007 (JavaScript) for arbitrary script execution in victim browser context, often delivered via phishing link.

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