The Beaver Builder Plugin (Starter Version) for WordPress contains a stored cross-site scripting vulnerability identified as CVE-2025-8427. This vulnerability is due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of the 'auto_play' parameter. Authenticated attackers with Contributor-level privileges or higher can inject malicious scripts that persist in pages and execute in the context of users who visit those pages. This can lead to limited confidentiality and integrity impacts as indicated by the CVSS vector (Confidentiality and Integrity impact: Low; Availability: None). The vulnerability affects all versions up to 2.9.2.1. No patch or remediation details are currently available from the vendor or advisory sources.

An attacker with Contributor-level or higher access can exploit this vulnerability to inject stored malicious scripts via the 'auto_play' parameter. These scripts execute in the browsers of users who view the compromised pages, potentially leading to limited confidentiality and integrity impacts such as session hijacking or content manipulation. There is no impact on availability. No known exploits have been reported in the wild.

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 implementing additional input validation or output encoding controls at the application or web server level to mitigate risk. Monitor vendor channels for updates and apply patches promptly once released.