CVE-2024-13877

CVE-2024-13877 is a reflected cross-site scripting (XSS) vulnerability in the Passbeemedia Web Push Notification WordPress plugin through version 1.0.0. The flaw arises because the plugin fails to sanitize and escape a parameter before outputting it back in the page, enabling arbitrary script execution in a victim's browser context. Mapped to CWE-79, 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 its network accessibility and scope change.

Unauthenticated attackers can exploit this vulnerability remotely with low complexity by tricking a targeted user, such as a site administrator, into interacting with a malicious link or page via social engineering. Successful exploitation executes JavaScript in the victim's session, potentially allowing attackers to steal admin credentials, manipulate site content, or perform other actions with the victim's privileges, leading to low impacts on confidentiality, integrity, and availability.

The WPScan advisory at https://wpscan.com/vulnerability/0e8ce3cf-1598-4c5d-b119-99d5f676e619/ provides details on the vulnerability, including reproduction steps and affected versions. Security practitioners should consult this reference for mitigation recommendations, such as updating the plugin if a patch is available or removing it from WordPress sites.