{"schemaVersion":3,"id":"CVE-2026-28268","aliases":["GHSA-rfjg-6m84-crj2","GO-2026-4575"],"status":"published","duplicateOf":null,"title":null,"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. 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