Listen to this Post
The CVE-2025-XXXX vulnerability in Liferay Portal stems from an insecure direct object reference (IDOR) flaw within its calendar component’s access control mechanisms. The application fails to properly enforce authorization checks on calendar enumeration requests. When an authenticated user sends a request to the calendar API endpoint, the backend does not validate if the user has explicit view permissions for all calendars being queried. This allows a low-privileged attacker to systematically manipulate request parameters, such as user IDs, to iterate through and retrieve the calendar names of other users. The vulnerability exposes a list of valid usernames or calendar s, which can be leveraged for targeted phishing campaigns or to map the user base, thereby compromising user privacy and increasing the attack surface for further exploitation.
Platform: Liferay Portal/DXP
Version: 7.4.0 – 7.4.3.132
Vulnerability: User Enumeration
Severity: Moderate
date: 2025-08-19
Prediction: 2025-09-16
What Undercode Say:
`curl -H “Authorization: Basic [bash]” “https://target.com/api/jsonws/calendar.calendar/get-calendars/-/user/[bash]”`
`for id in {1..100}; do curl -s “https://target.com/o/api/calendars?userId=$id” | jq ‘.items[].name’; done`
How Exploit:
Authenticated attacker manipulates userID parameter in calendar API requests to enumerate other users’ calendar names.
Protection from this CVE:
Apply vendor patch. Implement strict authorization checks on all calendar API endpoints to verify the requesting user has permission to access the specific resource.
Impact:
Information Disclosure leading to targeted phishing attacks and user privacy violation.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
