The vulnerability CVE-2025-46528 affects the Steve Availability Calendar up to version 0.2.4 and is characterized by a Cross-Site Request Forgery (CSRF) flaw that enables Stored Cross-Site Scripting (XSS). The CVSS 3.1 base score is 7.1, indicating high severity, with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed. The impact includes partial loss of confidentiality, integrity, and availability. No patch or official fix information is available from the vendor or advisory sources.

Successful exploitation of this vulnerability could allow an attacker to execute stored malicious scripts in the context of the affected application, potentially leading to data disclosure, modification, or disruption of service. The CSRF aspect means that an attacker could trick an authenticated user into performing unwanted actions that result in stored XSS payloads being injected and executed.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider implementing CSRF protections such as anti-CSRF tokens and input validation to mitigate the risk. Monitoring for unusual activity related to stored XSS may also be prudent.