The Gutenverse WordPress plugin versions up to 3.1.0 contain a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of user-supplied input in the Animated Text and Fun Fact blocks. This allows authenticated users with contributor or higher privileges to inject arbitrary JavaScript code that executes in the context of other users viewing the affected pages. The vulnerability is network exploitable with low attack complexity and does not require user interaction. It impacts confidentiality and integrity but not availability, reflected in a CVSS 3.1 base score of 6.4.

An attacker with contributor-level access or higher can inject persistent malicious scripts into pages using the vulnerable blocks. These scripts execute in the browsers of users who view the infected pages, potentially leading to theft of sensitive information or unauthorized actions performed on behalf of the victim user. The vulnerability affects confidentiality and integrity but does not impact system availability. No known exploits in the wild have been reported.

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 disabling the affected blocks if possible. Monitor the vendor's channels for updates regarding patches or official mitigations.