CVE-2026-81201: CWE-79 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") in Drupal Monster Menus

This vulnerability, identified as CVE-2026-81201, involves improper neutralization of input in the Drupal Monster Menus module, leading to stored cross-site scripting (CWE-79). The flaw allows an attacker to inject malicious scripts that are stored and later executed in the context of users viewing affected pages. The affected versions include Monster Menus from 0.0.0 up to 9.5.3. The CVSS vector indicates the attack can be performed remotely without privileges but requires user interaction. Confidentiality and integrity impacts are low, with no availability impact. No vendor advisory or patch information is currently available.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of users visiting affected pages, potentially leading to information disclosure or manipulation of content. The impact is rated medium with low confidentiality and integrity impact and no availability impact. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider applying any recommended workarounds from the vendor or restrict access to the affected module. Monitor official Drupal channels for updates and patches addressing this vulnerability.