The Astra WordPress theme versions up to 4.6.8 contain a stored XSS vulnerability due to improper neutralization of input during web page generation (CWE-79). Specifically, the user's display name is not adequately sanitized or escaped, enabling authenticated users with contributor-level privileges or above to inject arbitrary JavaScript code. This code executes in the context of other users viewing the compromised page, potentially leading to session hijacking or other client-side impacts. The vulnerability is network exploitable with low attack complexity and no user interaction required beyond authentication.

An attacker with contributor-level or higher access can inject malicious scripts into pages via their display name. These scripts execute in the browsers of users who view the infected pages, potentially leading to information disclosure or session compromise. The confidentiality and integrity impacts are low, and availability is not affected. There are no known exploits in the wild at this time.

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. Monitor updates from brainstormforce for a security patch addressing this issue.