CVE-2026-34727
High
Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the OIDC callback handler issues a full JWT token without checking whether the matched user has TOTP two-factor authentication enabled. When a local user with TOTP enrolled is matched via the OIDC email fallback mechanism, the second factor is completely skipped. This vulnerability is fixed in 2.3.0.
SeverityHigh
CVSS7.4
Exploit probability—
ProductVikunja
PublishedApr 10, 2026
First seenApr 10, 2026
Weakness typeCWE-287Improper authentication
How to fix
Update
- vikunja vikunja2.3.0 or later
- code.vikunja.io/api2.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vikunja vikunja | v < 2.3.0 | 2.3.0 |
| code.vikunja.io/apiGo | v < 2.3.0, No range specified | 2.3.0 |
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