CVE-2025-8143 is a stored cross-site scripting vulnerability in the Soledad WordPress theme by pencidesign, affecting all versions up to and including 8.6.7. The vulnerability exists due to improper neutralization of input in the 'pcsml_smartlists_h' parameter, allowing authenticated users with Contributor-level permissions or higher to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The CVSS 3.1 base score is 6.4 (medium severity), with attack vector network, low attack complexity, privileges required at the level of a contributor, no user interaction, and impacts on confidentiality and integrity but not availability.

An attacker with Contributor-level or higher access can exploit this vulnerability to inject malicious scripts that execute in the browsers of users viewing the compromised pages. This can lead to partial confidentiality and integrity impacts, such as theft of user credentials or unauthorized actions performed on behalf of users. There is no indication of availability impact. No known exploits are currently reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Contributor-level access to trusted users only and consider applying additional input validation or output escaping controls if possible. Monitor vendor channels for updates and apply patches promptly once available.