CVE-2025-63020 describes a stored cross-site scripting vulnerability in the Wayne Allen Postie plugin (versions up to 1.9.73). The issue is caused by improper neutralization of input during web page generation, which allows attackers with certain privileges to inject malicious scripts that are stored and later executed when other users view the affected content. The vulnerability has a CVSS 3.1 score of 6.5, reflecting medium severity with impacts to confidentiality, integrity, and availability. No patch or mitigation details are currently provided by the vendor or in public advisories.

Successful exploitation of this vulnerability could allow an attacker with privileges to inject malicious scripts that execute in the context of other users, potentially leading to unauthorized actions, data disclosure, or disruption of service. The impact affects confidentiality, integrity, and availability but requires some level of privilege and user interaction to exploit.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit privileges to trusted users and exercise caution when handling content input. Monitor vendor communications for updates and apply patches promptly once released.