CVE-2026-41133 HIGH

CVE-2026-41133: pyLoad has Stale Session Privilege After Role/Permission Change (Privilege Revocation Bypass)

Vendor Pyload
Product pyload
Weakness CWE-613 · Insufficient session expiration
Published April 21, 2026
Last update April 22, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

pyLoad is a free and open-source download manager written in Python. Versions up to and including 0.5.0b3.dev97 cache `role` and `permission` in the session at login and continues to authorize requests using these cached values, even after an admin changes the user's role/permissions in the database. As a result, an already logged-in user can keep old (revoked) privileges until logout/session expiry, enabling continued privileged actions. This is a core authorization/session-consistency issue and is not resolved by toggling an optional security feature. Commit e95804fb0d06cbb07d2ba380fc494d9ff89b68c1 contains a fix for the issue.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
April 22, 2026 Record updated