CVE-2026-12421 is a stored cross-site scripting vulnerability in the ARforms WordPress plugin affecting all versions up to and including 7.2.1. The issue is due to improper neutralization of input during web page generation, specifically insufficient sanitization and escaping of the 'password' field values. This allows unauthenticated attackers to inject arbitrary web scripts that execute in the context of users visiting the injected pages, potentially compromising confidentiality and integrity. The vulnerability has a CVSS 3.1 base score of 7.2, reflecting its high severity and ease of exploitation over the network without privileges or user interaction. No patch or official remediation level has been published by the vendor as of the provided data.

Successful exploitation allows unauthenticated attackers to execute arbitrary scripts in the context of users viewing the affected pages, leading to potential confidentiality and integrity breaches. There is no impact on availability. This can result in theft of sensitive information, session hijacking, or other malicious actions performed with the privileges of the victim user.

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 restricting access to the vulnerable 'password' field functionality in ARforms or applying custom input sanitization and output escaping as a temporary mitigation. Monitor official vendor channels for updates and patches.