CVE-2024-2842 is a stored cross-site scripting vulnerability in the Easy Appointments WordPress plugin affecting all versions up to 3.11.18. The issue is due to improper neutralization of input in the 'ea_full_calendar' shortcode, allowing authenticated users with contributor-level privileges or higher to inject arbitrary JavaScript code. This code executes in the context of users who access the injected pages, potentially leading to session hijacking or other script-based attacks. The vulnerability has a CVSS 3.1 base score of 6.4, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and impacts on confidentiality and integrity with scope change.

An attacker with contributor-level access or higher can store malicious scripts via the vulnerable shortcode, which execute in the browsers of users viewing the affected pages. This can lead to unauthorized actions such as session hijacking or data manipulation within the context of the victim's session. The impact is limited to confidentiality and integrity with no availability impact. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the 'ea_full_calendar' shortcode if feasible to reduce exposure.