CVE-2026-84812: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in wordplus BP Better Messages

CVE-2026-84812 is an unauthenticated cross-site scripting (XSS) vulnerability in BP Better Messages (wordplus) affecting versions up to 2.15.27. The issue stems from improper neutralization of input during web page generation (CWE-79), allowing attackers to inject malicious scripts that can execute in the context of the victim's browser. The vulnerability has a CVSS 3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating it can be exploited remotely without privileges but requires user interaction. The vulnerability impacts confidentiality, integrity, and availability of the affected system. No vendor advisory or patch is currently available, and no known exploits have been reported.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to information disclosure, session hijacking, or other malicious actions affecting confidentiality, integrity, and availability. The vulnerability is exploitable remotely without authentication but requires user interaction. There are no reports of active exploitation in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider applying any available workarounds or mitigations recommended by the vendor. Monitoring for updates from wordplus regarding this vulnerability is advised.