What is CVE-2025-62781?

CVE-2025-62781 is a medium-severity vulnerability in Thm Pilos, classified under Insufficient Session Expiration. CVSS score: 5.0/10. Published 2025-10-27.

How severe is CVE-2025-62781?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Thm Pilos

CVE-2025-62781

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.

EPSS: 0.002 (5.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Thm Pilos
Thm-health Pilos — versions < 4.8.0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2025-62781?: CVE-2025-62781 is a medium-severity vulnerability in Thm Pilos, classified under Insufficient Session Expiration. CVSS score: 5.0/10. Published 2025-10-27.
How severe is CVE-2025-62781?: Medium severity. CVSS v3 base score is 5.0 out of 10.