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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-10 | Updated 2026-04-13 | Assigner GitHub_M

Problem types

CWE-287: Improper Authentication

Product status

References

github.com/...ikunja/security/advisories/GHSA-8jvc-mcx6-r4cg exploit

github.com/...ikunja/security/advisories/GHSA-8jvc-mcx6-r4cg

cve.org (CVE-2026-34727)

nvd.nist.gov (CVE-2026-34727)

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