Liferay Portal is vulnerable to XSS through its Calendar Events parameters
Date: 2025-10
Affected: maven/com.liferay:com.liferay.calendar.web
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2025-62240
CWE: CWE-79

Multiple cross-site scripting (XSS) vulnerabilities with Calendar events in Liferay Portal 7.4.3.35 through 7.4.3.111, and Liferay DXP 2023.Q4.0 through 2023.Q4.5, 2023.Q3.1 through 2023.Q3.7, 7.4 update 35 through update 92, and 7.3 update 25 through update 36 allow remote attackers to inject arbitrary web script or HTML via a crafted payload injected into a user’s (1) First Name, (2) Middle Name or (3) Last Name text field.


Mitigations:

Architectural layers (MAESTRO):