CVE-2026-28268 – Vikunja Vulnerable to Account Takeover via Password Reset Token Reuse

CVE ID : CVE-2026-28268

Published : Feb. 27, 2026, 9:16 p.m. | 19 minutes ago

Description : Vikunja is an open-source self-hosted task management platform. Versions prior to 2.1.0 have a business logic vulnerability exists in the password reset mechanism of vikunja/api that allows password reset tokens to be reused indefinitely. Due to a failure to invalidate tokens upon use and a critical logic bug in the token cleanup cron job, reset tokens remain valid forever. This allows an attacker who intercepts a single reset token (via logs, browser history, or phishing) to perform a complete, persistent account takeover at any point in the future, bypassing standard authentication controls. Version 2.1.0 contains a patch for the issue.

Severity: 9.8 | CRITICAL

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