CVE-2026-96361: CWE-79 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") in Drupal Webform

This vulnerability, identified as CWE-79, exists in the Drupal Webform module where user input is not properly sanitized during web page generation. This improper neutralization can lead to Cross-Site Scripting (XSS) attacks, potentially allowing attackers to execute arbitrary scripts in the context of the affected web application. The affected versions are from 0.0.0 through 6.2.11 inclusive, and from 6.3.0 through 6.3.0 inclusive. The vulnerability was published on October 22, 2026. No CVSS score or vendor patch information is provided in the input data.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected Drupal Webform application, potentially leading to session hijacking, defacement, or other malicious actions within the user's browser session. The exact impact depends on the context in which the Webform module is used and the privileges of the affected users.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor Drupal's official security advisories for updates and apply any released patches promptly. Until a fix is available, consider applying input validation or output encoding workarounds if feasible.