Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the TOTP failed-attempt lockout mechanism is non-functional due to a database transaction handling bug. When a TOTP validation fails, the login handler in pkg/r…
Exact source revision recorded 1 Nov 2026 06:11:00 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-21422
PublishedVikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the TOTP failed-attempt lockout mechanism is non-functional due to a database transaction handling bug. When a TOTP validation fails, the login handler in pkg/routes/api/v1/login.go calls HandleFailedTOTPAuth and then unconditionally rolls back. HandleFailedTOTPAuth in pkg/user/totp.go uses an in-memory counter (key-value store) to track failed attempts. When the counter reaches 10, it calls user.SetStatus(s, StatusAccountLocked) on the same database session s. Because the login handler always rolls back after a TOTP failure, the StatusAccountLocked write is undone. The in-memory counter correctly increments past 10, so the lockout code executes on every subsequent attempt, but the database write is rolled back every time. This allows unlimited brute-force attempts against TOTP codes. This vulnerability is fixed in 2.3.0.
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Original publisher date fields
datePublished: Apr 10, 2026, 4:03:19 PM
dateUpdated: Apr 13, 2026, 3:37:11 PM
- Source published
- Apr 10, 2026, 4:03:19 PM (timezone not stated)
- Source modified
- Apr 13, 2026, 3:37:11 PM (timezone not stated)
- Observed here
- 1 Nov 2026 06:11:00 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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EUVD CVSS 3.1 · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N