CVE-2025-23653
Published: 14 February 2025
Summary
CVE-2025-23653 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 29.2th 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-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates reflected XSS by requiring filtering of information outputs to neutralize malicious scripts before web page generation.
Enforces validation of user inputs to prevent improper neutralization that enables script injection in the WordPress plugin.
Requires timely flaw remediation, such as patching the vulnerable cf7-calendly-integration plugin, to eliminate the XSS vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS vulnerability requires user interaction via a maliciously crafted link to inject and execute arbitrary scripts in the browser, directly enabling/facilitating spearphishing link attacks for session compromise.
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nabeel Tahir Form To Online Booking cf7-calendly-integration allows Reflected XSS.This issue affects Form To Online Booking: from n/a through <= 1.0.
Deeper analysisAI
CVE-2025-23653 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the WordPress plugin Form To Online Booking (cf7-calendly-integration) by Nabeel Tahir. The issue affects all versions of the plugin from unknown initial release through 1.0 inclusive. Published on 2025-02-14, it 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 high severity due to network accessibility and scope change.
Attackers can exploit this vulnerability remotely over the network with low attack complexity and no required privileges, though it demands user interaction such as visiting a maliciously crafted link or page. Exploitation enables injection of arbitrary scripts into reflected web pages, potentially compromising the victim's browser session. This yields low impacts on confidentiality (e.g., session token theft), integrity (e.g., page modification), and availability, amplified by the changed scope to the user's context.
Patchstack provides details on this vulnerability, including mitigation guidance, in their advisory at https://patchstack.com/database/Wordpress/Plugin/cf7-calendly-integration/vulnerability/wordpress-form-to-online-booking-plugin-1-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve. Security practitioners should check for plugin updates or apply recommended workarounds as specified there.
Details
- CWE(s)