CVE-2025-62781 MEDIUM

CVE-2025-62781: PILOS is missing session regeneration after password change

Vendor Thm-Health
Product PILOS
Weakness CWE-613 · Insufficient session expiration
Published October 27, 2025
Last update October 28, 2025

CVSS base score

5.0/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

What the vulnerability does

01Description

PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. Prior to 4.8.0, users with a local account can change their password while logged in. When doing so, all other active sessions are terminated, except for the currently active one. However, the current session’s token remains valid and is not refreshed. If an attacker has previously obtained this session token through another vulnerability, changing the password will not invalidate their access. As a result, the attacker can continue to act as the user even after the password has been changed. This vulnerability is fixed in 4.8.0.

Key dates

02Disclosure timeline

October 27, 2025 CVE published
October 28, 2025 Record updated