CVE-2026-28268: critical vulnerability in go-vikunja vikunja
Vikunja Vulnerable to Account Takeover via Password Reset Token Reuse
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.7%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
go-vikunja · vikunjaRelated CVEs — go-vikunja vikunja
In the same product, most dangerous first.
CVE-2026-33336MEDIUMVikunja Desktop vulnerable to Remote Code Execution via same-window navigationEPSS 1.2%CVE-2026-27819HIGHVikunja has Path Traversal in CLI RestoreEPSS 0.8%CVE-2026-91973HIGHVikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuthEPSS 0.7%CVE-2026-91972HIGHVikunja before 2.6.0 Authentication Bypass via Unthrottled APIEPSS 0.6%CVE-2026-27616HIGHVikunja Vulnerable to Stored Cross-Site Scripting (XSS) via Unsanitized SVG Attachment Upload Leading to Token ExposureEPSS 0.5%CVE-2026-55065HIGHVikunja: Improper Authorization and Authorization Bypass Through User-Controlled Key in code.vikunja.io/apiEPSS 0.5%