The vulnerability CVE-2025-23749 affects the mybb Last Topics plugin from progpars.net, versions up to and including 1.0. It is a Cross-Site Request Forgery (CSRF) issue that enables Stored Cross-Site Scripting (XSS) attacks. 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 impacts on confidentiality, integrity, and availability. No vendor advisory or patch information is available at this time.

Successful exploitation of this vulnerability could allow an attacker to execute stored malicious scripts in the context of the victim's browser, potentially leading to data theft, session hijacking, or other malicious actions affecting confidentiality, integrity, and availability. The CSRF nature of the vulnerability means that an attacker could trick an authenticated user into performing unintended actions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling or removing the vulnerable plugin or applying any recommended temporary mitigations from the vendor. Avoid interacting with untrusted links or sites that could trigger CSRF attacks.