CVE-2026-27575 CRITICAL

CVE-2026-27575: Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change

Vendor Go-Vikunja
Product vikunja
Weakness CWE-521
Published February 25, 2026
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
February 26, 2026 Record updated