CVE-2026-102376 is a CWE-79 Cross-Site Scripting vulnerability in WPMU DEV Branda plugin versions up to 3.4.32. It allows subscriber-level users to inject malicious scripts due to improper input neutralization during web page generation. 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.

Successful exploitation could allow an attacker with subscriber privileges to execute arbitrary scripts in the context of the affected web application, potentially leading to data disclosure, modification, or disruption of service. The vulnerability affects confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, consider restricting subscriber input or applying web application firewall rules to detect and block malicious payloads.