CVE-2024-9548 is a stored cross-site scripting vulnerability in the SlimStat Analytics plugin for WordPress, affecting all versions up to and including 5.2.6. The vulnerability is due to improper neutralization of input (CWE-79) in the resource parameter, which is logged without sufficient sanitization or escaping. This allows unauthenticated attackers to inject arbitrary web scripts that execute in the context of users viewing the injected pages. The CVSS 3.1 base score is 7.2 (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality and integrity with scope change.

Successful exploitation enables an unauthenticated attacker to execute arbitrary scripts in the context of users visiting the affected pages, potentially leading to information disclosure and integrity impacts. There is no indication of availability impact. This can compromise user data or session information within the affected WordPress environment.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider disabling or removing the SlimStat Analytics plugin or restricting access to pages that process the resource parameter. Implementing web application firewall (WAF) rules to detect and block malicious input targeting the resource parameter may provide temporary mitigation.