CVE-2026-40806: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Plugin Devs Blog, Posts and Category Filter for Elementor

This vulnerability (CWE-79) involves improper neutralization of input during web page generation in the Blog, Posts and Category Filter plugin for Elementor, versions <= 2.1.0. An unauthenticated attacker can exploit this flaw to perform cross-site scripting (XSS) attacks, which may lead to partial compromise of user data and site functionality. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low to high impact on confidentiality, integrity, and availability.

Successful exploitation can allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to data leakage, session hijacking, or disruption of service. The vulnerability affects confidentiality, integrity, and availability at low to high levels as indicated by the CVSS vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, consider applying temporary mitigations such as input validation or disabling the affected plugin if feasible.