CVE-2026-34727CRITICAL 9.1EPSS p19.6%

CVE-2026-34727CVE-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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.28% probability of exploitation · percentile 19.6% · 2026-06-19T12:03:05Z
Published2026-04-10
Last modified2026-04-20

Underlying weaknesses· 1

CWE-287

References

  1. https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cg
  2. https://github.com/go-vikunja/vikunja/security/advisories/GHSA-8jvc-mcx6-r4cg

1

TypeTargetConfidenceTier
WeaknessImproper Authenticationcwe-2870%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.