High severity7.4NVD Advisory· Published Apr 10, 2026· Updated Apr 20, 2026
CVE-2026-34727
CVE-2026-34727
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
code.vikunja.io/apiGo | < 2.3.0 | 2.3.0 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cgnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-8jvc-mcx6-r4cgghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-34727ghsaADVISORY
- github.com/go-vikunja/vikunja/commit/b642b2a4536a3846e627a78dce2fdd1be425e6a1ghsaWEB
- github.com/go-vikunja/vikunja/pull/2582ghsaWEB
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0ghsaWEB
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