high7.4
CVE-2026-34727
Vikunja has TOTP Two-Factor Authentication Bypass via OIDC Login Path
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | <= 2.2.2 | 2.3.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vikunja | Vikunja | before 2.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cg
- https://github.com/advisories/GHSA-8jvc-mcx6-r4cg
- https://github.com/go-vikunja/vikunja/pull/2582
- https://github.com/go-vikunja/vikunja/commit/b642b2a4536a3846e627a78dce2fdd1be425e6a1
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-34727