CVE-2026-34727

CriticalCVSS 9.1/10Last modified Oct 26, 2026

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-287

Affected software

Vendor	Product	Versions
go-vikunja	vikunja	< 2.3.0

References

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cgExploit, Vendor Advisory
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cgExploit, Vendor Advisory

Timeline

Published: Apr 10, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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