CVE-2026-108487: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Hossni Mubarak Books Gallery

The vulnerability identified as CVE-2026-108487 involves improper neutralization of input during web page generation in the Hossni Mubarak Books Gallery WordPress plugin. This results in a stored cross-site scripting (XSS) flaw where malicious input is persistently stored and later rendered in web pages without proper sanitization. The vulnerability affects all versions prior to 4.8.5. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, low privileges required, and user interaction needed. The impact includes partial confidentiality, integrity, and availability loss due to script execution in the context of affected users.

Successful exploitation of this stored XSS vulnerability can allow an attacker with low privileges to execute arbitrary scripts in the context of other users who view the affected pages. This can lead to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability. The vulnerability requires user interaction and low privileges but can have a significant impact due to its stored nature.

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 restricting user input that can be stored and rendered, and apply web application firewall (WAF) rules to detect and block XSS payloads. Monitor vendor channels for updates and apply official patches promptly once released.